Opinion
Innocent Lives Behind Bars and the Call for Justice
Published
10 months agoon
By
Eric
By Hezekiah Olujobi
In a world where justice is meant to prevail, the harsh reality of innocent individuals languishing in prison on allegations of capital offenses such as murder and armed robbery is a troubling phenomenon. The judiciary, a pillar of our society, sometimes falters, leading to arbitrary sentences that condemn the innocent to years, even decades, of incarceration. This article sheds light on the plight of these individuals, many of whom face the death penalty, and the urgent need for a thorough review of their cases.
The Harrowing Reality of Wrongful Convictions
Across the globe, countless people find themselves trapped in the unforgiving grip of the justice system, accused of heinous crimes they did not commit. The statistics are staggering. In many countries, thousands of individuals are imprisoned for capital offenses, with a significant number maintaining their innocence. These individuals often face the grim reality of life sentences or death row, with little hope of a fair review of their cases.
The Centre for Justice, Mercy, and Reconciliation (CJMR) has become a beacon of hope for many of these individuals. Reports indicate that a disturbing number of inmates from four different prison locations in South West Nigeria have reached out to our organization, sharing their heart-wrenching stories of wrongful convictions. These narratives are not just numbers; they are the voices of people who have spent 24, 27 years, or more behind bars, steadfast in their claims of innocence.
Case Studies of Innocence
1. *Oluwatoyin Abokokuyanro & 2 Others*
**Background**: Oluwatoyin Abokokuyanro, along with his co-defendants Olarewaju Ayan and Sunday Odoh, was arrested on November 28, 1998, in Oke Ayedun Ekiti, Ikole Local Government Area, on allegations of murder. The case involved a violent incident that resulted in the death of an individual, leading to a widespread police investigation.
**Trial and Conviction**: Initially, around 12 individuals were arrested in connection with the murder, but only four were charged. During the trial, one of the accused died in prison, raising concerns about the conditions of detention and the treatment of the accused. On October 25, 2006, Oluwatoyin and his two co-defendants were sentenced to death. They maintained their innocence throughout the trial, claiming that they were wrongfully accused based on unreliable witness testimonies and circumstantial evidence.
**Appeals**: The trio appealed their conviction, but their appeal was unsuccessful, and the Supreme Court upheld the death sentences. In 2018, the Ekiti State Governor commuted their sentences to life imprisonment, acknowledging the lengthy time they had already spent in prison. Oluwatoyin was later granted a 10-year sentence as part of an amnesty exercise, while the other two remain in prison serving life sentences. Oluwatoyin expressed his despair, stating, “If I committed this crime, it is of no use for me telling lies than to beg for mercy before the living God, the righteous judge. I am innocent.”
2. *Arinola Akinyele*
**Background**: Arinola Akinyele, a mother of eight children, faced a tragic turn of events when her husband died in a fire incident on October 21, 2014. The circumstances surrounding his death were murky, and Arinola was accused of murdering him.
*Trial and Conviction*: On July 5, 2018, Arinola was sentenced to death by hanging by the Ogun State High Court. The prosecution’s case relied heavily on circumstantial evidence, and crucial elements of the defense, such as the absence of medical reports and the withholding of evidence, were ignored by the court. Arinola’s appeal against the judgment was dismissed on October 22, 2024, despite her defense counsel raising significant issues regarding the fairness of the trial.
*Current Status*: With the support of the Centre for Justice, Mercy, and Reconciliation (CJMR), Arinola is now seeking amnesty from the Ogun State Governor. Her children have also appealed for her release, emphasizing their belief in her innocence and the injustice of her conviction.
3. Friday Okoro
**Background**: Friday Okoro was arrested on April 23, 2009, alongside Stephen Egwu, on allegations of armed robbery. The case garnered significant media attention, and both men were charged with a serious offense that carried the death penalty.
*Trial and Conviction*: On May 15, 2014, Friday and Stephen were sentenced to death. Following their conviction, both men filed separate appeals. Stephen’s appeal was heard at the Ibadan Court of Appeal, where his conviction was overturned on December 3, 2015, due to insufficient evidence. However, Friday’s appeal has yet to be heard, leaving him in a state of uncertainty.
**Current Status**: The CJMR has advocated for Friday, urging the Oyo State Board of Mercy to consider his case for clemency. The organization is pressing for the court to expedite the hearing of his appeal, especially in light of the favorable judgment for his co-defendant. The question remains: when will Friday’s case be heard, and will justice finally be served?
4. Rashidat Abdul and 3 Others
*Background*: Rashidat Abdul, her husband Oluwatoyin Akarakiri, their son Rashid Mutairu, and Rashidat’s niece Eronomo Iyoriegbhile were accused of being accomplices in the murder of their landlord in Odo-Owa Ekiti on April 5, 2017. The case was marked by a lack of concrete evidence linking them to the crime.
*Trial and Conviction*: On April 2, 2020, the family was sentenced to death by hanging. The prosecution’s case relied heavily on the testimony of a witness who claimed to have seen them with the deceased’s property. However, this witness’s credibility was questionable, as they provided no verifiable evidence, and the court ignored the defense’s arguments regarding the absence of physical evidence.
**Current Status*: The family has appealed their conviction, but their appeal was dismissed in 2022. The CJMR has submitted a plea for mercy to the Ekiti State Governor, highlighting the lack of evidence and the unjust nature of their sentencing. The emotional toll on the family has been profound, particularly on Rashidat’s son, who was a student at the time of their arrest and whose future has been severely impacted.
5. Ayodele Oladimeji
**Background**: Ayodele Oladimeji was accused of rape and subsequently arrested. His case drew attention due to the absence of the victim in court and a negative medical report that contradicted the charges against him.
**Trial and Conviction**: Despite the lack of substantial evidence, Ayodele was sentenced to life imprisonment by the Ado-Ekiti State High Court. The court relied primarily on the testimonies of two police officers, dismissing Ayodele’s alibi and the absence of the victim as irrelevant. This raised serious questions about the integrity of the judicial process.
**Current Status**: The case has been marred by allegations of external influence, as it was suggested that the former governor’s wife may have affected public perception surrounding the trial. Ayodele’s family has suffered immensely, with his mother experiencing severe emotional distress that led to health complications. The CJMR is advocating for a review of his case, emphasizing the need for justice and accountability in the judicial process.
These case studies illustrate the profound injustices faced by individuals wrongfully convicted of serious crimes. Each story reflects the broader systemic issues within the judicial system, including reliance on unreliable witness testimony, inadequate legal representation, and a lack of thorough investigations. The Centre for Justice, Mercy, and Reconciliation continues to fight for these individuals, advocating for their rights and seeking to bring attention to the urgent need for reform in the justice system.
*The Voices of the Innocent*
The stories shared by these individuals are often filled with despair, frustration, and a longing for justice. Many have been convicted based on flimsy evidence, coerced confessions, or the testimony of unreliable witnesses. The emotional toll of being imprisoned for a crime they did not commit is unimaginable. Families are torn apart, lives are put on hold, and the stigma of a wrongful conviction follows them even after their release.
One inmate, who has spent over two decades in prison, recounted how he was wrongfully accused based on circumstantial evidence. “I have always maintained my innocence,” he said. “Every day I wake up in this cell, I wonder if anyone will ever listen to my story.” His plea is echoed by many others who have found solace in the Centre for Justice, Mercy, and Reconciliation, hoping that their cries for help will not go unheard.
*The Need for Action*
The issue of wrongful convictions demands urgent attention. Just as any successful business requires focus and dedication, addressing the injustices within our judicial system requires a concerted effort from all stakeholders. It is imperative that we listen to the stories of those who claim innocence and take their pleas seriously. A systematic review of their cases could potentially uncover the truth and lead to the exoneration of the wrongfully convicted.
Legal experts, human rights advocates, and the general public must come together to advocate for these individuals. This includes pushing for reforms in the judicial process, ensuring that legal representation is accessible and effective, and promoting transparency in investigations and trials.
*Conclusion*
The plight of innocent individuals behind bars is a stark reminder of the imperfections within our justice system. As we reflect on the stories of those who have been wrongfully convicted, we must remember that every case represents a life disrupted, a family shattered, and a quest for justice that remains unfulfilled.
It is time to listen, to act, and to ensure that the voices of the innocent are heard. The Centre for Justice, Mercy, and Reconciliation stands ready to support these individuals, but it requires a collective effort to bring about meaningful change. Let us not turn a blind eye to their suffering; instead, let us strive for a justice system that truly serves all, ensuring that the innocent are not left to languish in silence.
*What Says the Scriptures?*
Proverbs 31:8-9: “Speak up for those who cannot speak for themselves; ensure justice for those being crushed. Yes, speak up for the poor and helpless, and see that they get justice.” (NLT)
Proverbs 24:11-12: “Rescue those who are unjustly sentenced to die; save them as they stagger to their death. Don’t excuse yourself by saying, ‘Look, we didn’t know.’ For God understands all hearts, and he sees you. He who guards your soul knows you knew. He will repay all people as their actions deserve.” (NLT)
Isaiah 1:17: “Learn to do right; seek justice. Defend the oppressed. Take up the cause of the fatherless; plead the case of the widow.”
*List of People Affected by Wrongful Conviction*
– Ekiti State: 14 Inmates
– Osun State: 8 Inmates
– Oyo State: 2 Inmates
– Ogun State: 8 Inmates
– Lagos State: 8 Inmates
Justice is very expensive; the majority of these people are trapped because of the cost of transmitting the case file to the Court of Appeal. We should stop paying lip service to reform. It is time to take action.
When you heard of injustice in your community, what concrete steps do you take to address the injustice?
Hezekiah Olujobi CRJ can be reached via hezekiaholujobi@gmail.com
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Opinion
PDP Crisis: Illegal Factional Convention is a Direct Assault on Party Constitution and Democracy
Published
3 days agoon
March 29, 2026By
Eric
By Prince Adedipe Dauda Ewenla
The attention of party faithfuls and the general public has been drawn to the desperate and unconstitutional attempt by a faction within the Peoples Democratic Party to foist an illegal National Convention on the party in clear violation of its constitution and established democratic norms.
Let it be stated unequivocally: the Constitution of the PDP is clear, unambiguous, and binding on all members only a duly elected National Working Committee (NWC) has the constitutional authority to convene, approve, and conduct a National Convention.
This position is firmly grounded in the provisions of the PDP Constitution:
1. Section 31(3) clearly vests the power to summon and convene the National Convention in the appropriate constitutional organ of the party, which operates through the National Working Committee.
2. Section 29(2)(a) establishes the National Working Committee as the principal executive organ responsible for the day-to-day administration and decision-making of the party.
3. Section 47(1) affirms the supremacy of the party constitution, making it binding on all members and organs of the party without exception.
Flowing from these provisions, any gathering, meeting, or assembly convened outside this constitutional framework is illegal, null, void, and of no consequence, being ultra vires, null ab initio, and incapable of conferring any legal rights or obligations whatsoever.
The ongoing attempt by a faction reportedly aligned with the Minister of the Federal Capital Territory, Nyesom Wike, to organize a so-called convention through an imposed and illegitimate caretaker structure is nothing but a brazen assault on the rule of law, party supremacy, and internal democracy, and amounts to a clear case of constitutional subversion.
For the avoidance of doubt:
Individuals who have been suspended or expelled from the party lack the locus standi to act on its behalf.
Any caretaker arrangement not constitutionally backed by the elected organs of the party remains a nullity ab initio.
No faction, no matter how powerful, can override the supremacy of the party constitution.
Any purported action taken in furtherance of this illegality is void and liable to be set aside ex debito justitiae by any court of competent jurisdiction.
It is instructive that the Federal High Court and other competent courts have already taken judicial notice of these constitutional breaches by entertaining suits challenging the legality of the proposed convention. This alone is a clear warning that the entire process is fundamentally defective and cannot stand the test of law.
We therefore align firmly and unequivocally with the leadership direction and stabilizing efforts under Kabiru Turaki, whose commitment to constitutional order, due process, and party unity remains the only credible path forward for the PDP at this critical time.
The party cannot and must not be hijacked by individuals driven by personal ambition, vendetta politics, or external influence.
The survival of the PDP as a viable opposition platform depends on strict adherence to its constitution and respect for its legitimate structures.
We warn, in the strongest possible terms, that:
Any convention conducted outside the authority of a duly elected NWC will be resisted and rejected by loyal members of the party.
Any outcome from such an illegal exercise will be treated as void ab initio and will not be recognized within the party or before the Independent National Electoral Commission.
Those promoting this illegality are inviting avoidable chaos, multiplicity of suits, and grave political consequences for the PDP ahead of 2027.
This is not just about a convention this is about the soul, legality, and future of our great party.
I call on all genuine stakeholders to rise above factional manipulation and defend the constitution of the PDP with courage and clarity.
The rule of law must prevail. Fiat justitia ruat caelum. The constitution must stand. The PDP must not fall.
Prince Amb. (Dr.) Adedipe Dauda Ewenla
PDP Southwest Ex-Officio
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Opinion
Intentional Progressive Leadership and Disciplined Security: Catalysts for Unlocking Possibilities
Published
4 days agoon
March 28, 2026By
Eric
By Tolulope Adegoke PhD
In an increasingly interconnected and volatile world, the twin forces of intentional progressive leadership and disciplined security stand as indispensable drivers of meaningful advancement. Intentional progressive leadership is characterized by deliberate, forward-thinking decision-making that prioritizes inclusive growth, innovation, accountability, and long-term societal transformation over short-term gains or entrenched interests. Disciplined security, in turn, refers to a professional, rule-of-law-based, human-centered approach to safeguarding citizens, institutions, and resources—one that integrates military, intelligence, law enforcement, and community engagement while upholding human rights and fostering trust. Together, these elements do not merely maintain stability; they actively unlock possibilities across three interconnected spheres: peoples (individuals and communities), corporates (businesses and organizations), and nation building (state institutions and societal cohesion).
This write-up examines their active roles, portrays the current realities as they stand in Nigeria, Africa, and the wider world, provides relevant global and regional examples, and offers practical, unbiased solutions. Drawing on established patterns of development, the analysis underscores that where these forces converge effectively, they generate exponential outcomes; where they falter, stagnation and fragility ensue. The goal is to present a balanced, evidence-informed perspective suitable for policymakers, business leaders, scholars, and development practitioners internationally.
Defining and Contextualizing the Core Elements
Intentional progressive leadership goes beyond charisma or authority. It demands strategic vision anchored in data, ethical governance, stakeholder inclusion, and adaptive resilience. Leaders in this mold invest in human capital, promote transparency, and align policies with sustainable development goals. Disciplined security complements this by creating the enabling environment of safety and predictability. It emphasizes professional training, intelligence-led operations, community policing, and the rule of law rather than militarization or repression. When these operate in synergy, they transform potential into tangible progress: educated citizens innovate, businesses thrive without fear, and nations build resilient institutions.
Active Roles in Delivering Possibilities for Peoples
For individuals and communities, intentional progressive leadership and disciplined security create pathways to dignity, opportunity, and empowerment. Progressive leaders prioritize education, healthcare, and skills development, viewing people as the primary asset. Disciplined security ensures freedom from fear, enabling daily pursuits of livelihood and aspiration.
In practice, this synergy fosters social mobility and cohesion. Progressive leadership invests in youth programs and vocational training, while disciplined security protects learning environments and public spaces. The result is reduced vulnerability to exploitation and increased civic participation.
Active Roles in Delivering Possibilities for Corporates
Corporations require stable operating environments to invest, innovate, and expand. Intentional progressive leadership enacts policies that ease business registration, combat corruption, and promote public-private partnerships. Disciplined security safeguards supply chains, intellectual property, and personnel against threats like extortion or sabotage.
This combination drives economic dynamism. Businesses flourish when leaders provide predictable regulations and when security forces respond swiftly to disruptions, allowing corporates to focus on value creation rather than risk mitigation.
Active Roles in Delivering Possibilities for Nation Building
At the national level, these elements are foundational to sovereignty, legitimacy, and prosperity. Progressive leadership builds inclusive institutions, diversifies economies, and integrates regional and global partnerships. Disciplined security preserves territorial integrity, deters external interference, and supports internal harmony.
Nation building succeeds when leadership fosters national identity and security architecture reinforces it through equitable protection and justice.
The Current Picture: Realities in Nigeria, Africa, and the Wider World
Nigeria exemplifies both promise and persistent hurdles. As Africa’s most populous nation and largest economy, it possesses immense human and natural potential. Yet, as of early 2026, security challenges remain acute: insurgency and banditry in the Northeast and Northwest, farmer-herder conflicts in the Middle Belt, kidnapping for ransom nationwide, and separatist tensions in the Southeast. These have displaced millions, stifled agriculture and commerce, and eroded public trust. Leadership under President Bola Tinubu has pursued reforms, including kinetic and non-kinetic counter-insurgency measures, the appointment of a new Chief of Defence Staff in late 2025 for better operational coherence, and emphasis on human capital development (HCD 2.0). Progress includes reported surrenders of insurgent affiliates and targeted infrastructure investments, yet gaps persist in governance coordination, community engagement, and addressing root causes such as poverty and youth unemployment.
Across Africa, the landscape is heterogeneous. Positive models include Rwanda, where post-genocide leadership under President Paul Kagame has combined visionary governance with disciplined security to achieve sustained growth, digital innovation, and regional stability. Botswana stands as another exemplar: decades of prudent, transparent leadership have turned diamond revenues into broad-based development while maintaining professional security institutions that uphold democratic norms. Ghana demonstrates democratic continuity with progressive economic policies and relatively effective security cooperation. Conversely, parts of the Sahel face coups, jihadist expansion, and governance fragility, highlighting how leadership vacuums and undisciplined security exacerbate cycles of instability.
Globally, the interplay is evident in success stories such as Singapore’s transformation under Lee Kuan Yew, where meritocratic leadership and disciplined, corruption-free security institutions propelled a resource-poor city-state into a high-income economy. South Korea’s post-war reconstruction similarly blended visionary leadership with security alliances and human capital focus. In contrast, nations experiencing leadership complacency or fragmented security—such as certain conflict zones in the Middle East or Latin America—illustrate stalled development and eroded possibilities.
These realities reveal a clear pattern: intentional progressive leadership and disciplined security are not luxuries but necessities. Their absence perpetuates underdevelopment; their presence catalyzes breakthroughs.
Relevant Examples Illustrating Essence and Impact
- Rwanda: Post-1994 genocide, intentional leadership focused on reconciliation, education, and technology hubs, supported by disciplined security reforms that prioritized professional training and community policing. This has elevated Rwanda to one of Africa’s fastest-growing economies, attracting foreign investment and reducing poverty dramatically.
- Botswana: Progressive leadership emphasized accountable resource management and anti-corruption measures, paired with a professional military and police force. The outcome is one of Africa’s most stable democracies and highest Human Development Indices.
- Singapore: Lee Kuan Yew’s intentional policies built a merit-based civil service and rigorous, rule-based security apparatus. This created a safe, efficient environment that transformed the nation into a global financial and logistics hub.
- Nigeria-specific: Initiatives like community-based security arrangements in some states, when aligned with progressive local leadership, have reduced localized banditry. Corporate examples include Lagos tech ecosystems thriving amid targeted security enhancements in business districts.
These cases justify the essence: deliberate leadership and disciplined security deliver measurable possibilities when integrated holistically.
Proffering Relevant Solutions: Pathways Forward Without Prejudice
Solutions must be context-specific yet universally applicable, emphasizing collaboration across stakeholders.
For Peoples (Individuals and Communities):
- Nigeria and Africa: Scale up human capital programs like Nigeria’s HCD 2.0 through universal basic education, vocational training, and digital literacy, especially in rural and conflict-affected areas. Integrate community policing models that empower local vigilantes under professional oversight to build trust.
- Wider World: Adopt inclusive social safety nets and mental health support in post-conflict settings. International partners can provide technical assistance for youth entrepreneurship funds.
- Outcome: Reduced vulnerability and empowered citizens who contribute actively to development.
For Corporates:
- Nigeria and Africa: Enact progressive policies such as streamlined business regulations, tax incentives for security technology investments, and public-private security partnerships (e.g., joint task forces for critical infrastructure). Encourage corporate social responsibility in community safety initiatives.
- Wider World: Promote global standards like ISO security management systems and cross-border investment guarantees tied to stability metrics.
- Outcome: Enhanced investor confidence, job creation, and innovation ecosystems.
For Nation Building:
- Nigeria: Strengthen institutional reforms, including anti-corruption enforcement, judicial independence, and devolved security responsibilities (e.g., state police with federal safeguards). Foster inclusive national dialogues and leverage technology for intelligence sharing.
- Africa: Enhance African Union mechanisms for peer review, joint peacekeeping, and economic integration to address transnational threats.
- Wider World: Support multilateral frameworks that reward progressive governance with development aid and security cooperation, emphasizing capacity-building over external imposition.
- Cross-cutting Measures: Invest in data-driven monitoring (e.g., peace indices), leadership training academies, and civil society engagement to ensure accountability.
Implementation requires political will, sustained funding, and adaptive evaluation. International standards—such as those from the World Bank’s governance indicators or the Institute for Economics and Peace—can guide benchmarking without external overreach.
Conclusion: A Call to Deliberate Action
Intentional progressive leadership and disciplined security are not abstract ideals but active agents that shape destinies. In Nigeria and across Africa, where challenges are pronounced yet potential is vast, their effective deployment can convert vulnerabilities into strengths. Globally, they offer proven blueprints for resilient, prosperous societies. The current picture, while marked by setbacks, also reveals pathways of hope through ongoing reforms and exemplary models. By embracing these forces with intentionality, stakeholders at all levels can deliver genuine possibilities—empowered peoples, thriving corporates, and cohesive nations. The imperative is clear: invest in people-centered leadership and professional security today to secure a more equitable and stable tomorrow. Through collaborative, evidence-based strategies, Nigeria, Africa, and the wider world can realize their full potential in an interdependent global order.
Dr. Tolulope A. Adegoke, AMBP-UN is a globally recognized scholar-practitioner and thought leader at the nexus of security, governance, and strategic leadership. His mission is dedicated to advancing ethical governance, strategic human capital development, and resilient nation-building, and global peace. He can be reached via: tolulopeadegoke01@gmail.com, globalstageimpacts@gmail.com
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Opinion
Characterisation of Biomass Feedstocks Relaxation Properties Using Visco Elastic Models
Published
4 days agoon
March 28, 2026By
Eric
By Dr. Aminu Owonikoko, PhD
Overview
This thesis investigates a deceptively simple but industrially important question: what happens to biomass materials when they are compressed and then allowed to relax? Biomass — such as woodchips, wheat straw, leafy residues, cotton seeds, and wood pellets — is a major renewable resource used for energy production and sustainable manufacturing. However, its physical behaviour during handling, storage, and processing is poorly understood. Unlike uniform materials such as sand or grain, biomass is irregular, springy, and unpredictable. This unpredictability leads to blockages, equipment failures, and inefficient energy use in biomass processing plants.
The research provides a scientific foundation for predicting how biomass behaves under pressure by combining controlled experiments with Visco elastic modelling. The work introduces a new method for extracting key model parameters, enabling more accurate and transparent predictions of biomass relaxation behaviour.
Why Biomass Behaviour Matters
Biomass supply chains involve several mechanical steps: compaction, transport, storage, and feeding into processing equipment. During these steps, biomass is often compressed. Once the pressure is removed, the material “relaxes” — it expands, shifts, and redistributes internal stresses. This relaxation affects:
• how much biomass can be stored
• how reliably it flows through hoppers and conveyors
• how much energy is required to process it
• the likelihood of blockages or equipment downtime
Understanding this behaviour is essential for designing efficient, reliable, and cost effective biomass systems.
Research Aim
The central aim of the thesis is to characterise the stress relaxation behaviour of five biomass feedstocks and to develop robust Visco elastic models that can predict this behaviour under different loading conditions.
Experimental Approach
Five biomass materials were selected due to their relevance in renewable energy and agricultural supply chains:
• Fuzzy cotton seeds
• Leafy biomass
• Wheat straw
• Woodchips
• Wood pellets
Each material was compressed using a Shimadzu MTS testing machine. After reaching a target stress level, the load was held constant while the material’s stress decay was recorded over time (typically 60, 120, and 180 seconds). These measurements captured both fast relaxation (immediate stress drop) and slow relaxation (longer term settling).
The experimental data revealed that each biomass type behaves differently, reflecting differences in structure, moisture content, particle shape, and internal bonding.
Modelling Approach
To interpret the experimental results, the thesis applies Visco elastic models — mathematical tools traditionally used to describe materials that behave partly like solids and partly like fluids. Two models were central:
1. Zener Model
– Captures both elastic and viscous behaviour
– Useful for materials with a clear fast relaxation component
2. Two Maxwell Elements Model
– Represents two relaxation processes simultaneously
– Ideal for materials with both fast and slow relaxation phases
A key contribution of the thesis is the development of a numerical and graphical method for estimating model parameters (such as relaxation time constants) without relying heavily on curve fitting software like MATLAB or OriginPro. This method improves transparency, reduces error, and makes the modelling approach more accessible to engineers.
Key Findings
1. Biomass Has Distinct Relaxation “Signatures”
Each biomass type exhibits a unique pattern of stress decay. For example:
• Wood pellets relax quickly and predictably.
• Leafy biomass relaxes slowly and irregularly.
• Wheat straw shows intermediate behaviour.
These signatures can be used to classify materials and predict their handling performance.
2. Fast and Slow Relaxation Are Mechanically Meaningful
The two Maxwell elements model successfully separates fast and slow relaxation processes. This distinction helps engineers understand how biomass responds immediately after compression versus how it settles over time.
3. New Parameter Extraction Method Improves Accuracy
The thesis introduces a novel approach for estimating relaxation time constants and stress components. This reduces dependence on automated curve fitting tools and provides more reliable model predictions.
4. Models Predict Real Behaviour Well
When applied to experimental data, both the Zener and two Maxwell models accurately reproduce the relaxation curves. This confirms that Visco elastic modelling is a powerful tool for biomass characterisation.
Practical Implications
The findings have direct relevance for industries that handle biomass:
• Improved equipment design: Better predictions of relaxation behaviour reduce blockages and mechanical failures.
• Optimised storage: Understanding how biomass settles helps determine safe and efficient storage densities.
• Reduced energy use: More predictable flow reduces the energy required for conveying and processing.
• Enhanced process reliability: Plants can operate more consistently with fewer interruptions.
Conclusion
This thesis provides a comprehensive experimental and theoretical framework for understanding biomass relaxation behaviour. By combining detailed measurements with improved Visco elastic modelling, it offers new insights into how biomass responds under pressure — insights that are essential for scaling up renewable energy and sustainable manufacturing.
The work advances both scientific understanding and practical engineering, contributing to the development of cleaner, more efficient biomass systems.
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