A Method to Optimize Value Recovery From End-of-Life Products

2016 ◽  
Author(s):  
Liang Cong ◽  
Fu Zhao ◽  
John W. Sutherland
Keyword(s):  
End Of Life ◽  
Disk Drive ◽  
Automatic Generation ◽  
Economic Viability ◽  
Value Recovery ◽  
Process Plans ◽  
Disassembly Sequence ◽  
Important Means ◽  
Critical Materials

Recovering valuable materials and components from end-of-life (EOL) products is an important means to mitigate the risk of disruption in the supply of virgin, critical materials. The economic viability of value recovery from EOL products is greatly affected by the dismantling process plan, i.e., the processes and the sequence used to recover components and materials. This paper presents an approach to find the optimal EOL strategy, which includes a method for automatic generation of disassembly model and making decisions on the best disassembly sequence, level and EOL options of components/parts. The approach also proposes to identify bottlenecks; degree of automation and destructive disassembly (dismantling) are considered as schemes to attenuate bottlenecks. The ultimate goal of the work is to provide recyclers with process plans to maximize their economic return and to help designers to evaluate product recyclability. A hard disk drive is used as a case study to demonstrate the effectiveness of the approach.

Partial Disassembly Sequence Optimization of End-of-Life Products for Value Recovery

2009 ◽  
Author(s):  
Jeremy L. Rickli ◽  
Jaime A. Camelio ◽  
Giovannina Zapata
Keyword(s):  
End Of Life ◽  
Environmental Impacts ◽  
Performance Improvement ◽  
Sustainable Manufacturing ◽  
Market Demand ◽  
Sequence Optimization ◽  
Multi Objective ◽  
Material Recovery ◽  
Value Recovery ◽  
Disassembly Sequence

End-of-life product recovery operations require performance improvement to be viable in an industrial environment. A genetic algorithm (GA) is proposed to optimize end-of-life partial disassembly decisions based on disassembly costs, revenues, and environmental impacts. Facilitating disassembly optimization with costs, revenues, and environmental impacts is necessary to enhance sustainable manufacturing through value recovery. End-of-life products may not warrant disassembly past a unique disassembly stage due to limited recovered component market demand and minimal material recovery value. Remanufacturing is introduced into disassembly sequence optimization in the proposed GA as an alternative to recycling, reuse, and disposal. The proposed GA’s performance is first verified through optimizing partial disassembly sequences considering costs and environmental impacts independently. Extension to a multi-objective case concerning costs, revenues, and impacts is achieved by specifying a new set of multi-objective crossover probabilities from independent crossover probabilities.

scholarly journals A METHODOLOGY TO SUPPORT COMPANIES IN THE FIRST STEPS TOWARDS DE-MANUFACTURING

2021 ◽  
Vol 1 ◽  
pp. 131-140
Author(s):  
Federica Cappelletti ◽  
Marta Rossi ◽  
Michele Germani ◽  
Mohammad Shadman Hanif
Keyword(s):  
Environmental Impact ◽  
End Of Life ◽  
Design Stage ◽  
Life Strategies ◽  
Disassembly Sequence ◽  
The Status ◽  
The Cost ◽  
Technical Solutions ◽  
First Time ◽  
Complex Activities

AbstractDe-manufacturing and re-manufacturing are fundamental technical solutions to efficiently recover value from post-use products. Disassembly in one of the most complex activities in de-manufacturing because i) the more manual it is the higher is its cost, ii) disassembly times are variable due to uncertainty of conditions of products reaching their EoL, and iii) because it is necessary to know which components to disassemble to balance the cost of disassembly. The paper proposes a methodology that finds ways of applications: it can be applied at the design stage to detect space for product design improvements, and it also represents a baseline from organizations approaching de-manufacturing for the first time. The methodology consists of four main steps, in which firstly targets components are identified, according to their environmental impact; secondly their disassembly sequence is qualitatively evaluated, and successively it is quantitatively determined via disassembly times, predicting also the status of the component at their End of Life. The aim of the methodology is reached at the fourth phase when alternative, eco-friendlier End of Life strategies are proposed, verified, and chosen.

Optimal disassembly sequence generation and disposal of parts using stability graph cut-set method for End of Life product

Sadhana ◽  
2021 ◽  
Vol 46 (1) ◽  
Author(s):  
Bala Murali Gunji ◽  
Sai Krishna Pabba ◽  
Inder Raj Singh Rajaram ◽  
Paul Satwik Sorakayala ◽  
Arnav Dubey ◽  
...  
Keyword(s):  
End Of Life ◽  
Graph Cut ◽  
Sequence Generation ◽  
Disassembly Sequence ◽  
Cut Set ◽  
Stability Graph

A Robotic-Driven Disassembly Sequence Generator for End-Of-Life Electronic Products

2012 ◽  
Vol 68 (1) ◽  
pp. 43-52 ◽  
Author(s):  
Ahmed ElSayed ◽  
Elif Kongar ◽  
Surendra M. Gupta ◽  
Tarek Sobh
Keyword(s):  
End Of Life ◽  
Electronic Products ◽  
Disassembly Sequence ◽  
Sequence Generator

Childhood trauma, attachment style, and a couple's experience of terminal cancer: Case study

2010 ◽  
Vol 8 (2) ◽  
pp. 227-233 ◽  
Author(s):  
Linda M. McLean ◽  
Sarah Hales
Keyword(s):  
End Of Life ◽  
Childhood Trauma ◽  
Attachment Style ◽  
Multidisciplinary Team ◽  
Marital Distress ◽  
Empirical Literature ◽  
Cancer Case ◽  
Terminal Cancer ◽  
Team Approach

AbstractObjective:The primary objective of this article is to elucidate the significance of psychosocial distress and risk in a sub-population of end-stage cancer patients and their spouse caregivers who present with an especially challenging attachment style and histories of childhood trauma. The case study presented highlights the need to both identify and offer an empirically validated couple–based intervention, along with a multi-disciplinary team approach over the trajectory of the illness and at end of life.Method:A validated marital protocol (emotionally focused couple therapy [EFT]) is modified for this population and conducted by an EFT-trained psychologist as part of a pilot investigation as to the feasibility and effectiveness of EFT for the terminal cancer population. Measures of marital distress, depression, hopelessness, and attachment security are completed at baseline and subsequent intervals, as reported in another publication. Attachment insecurity and the exquisitely intimate relationship with caregiving and care receiving are underscored, given the couple's traumatic childhood history.Results:The couple described herein, followed from diagnosis of metastatic disease to end of life illuminates the potential effectiveness of a modified EFT protocol, and underscores the need to both identify and intervene with a population potentially at significantly high risk for marital distress, suicidality, depression, and hopelessness.Significance of Results:The benefits of a multidisciplinary team is evident as the patient's symptoms of physical distress increased toward end of life and she returned to earlier behaviors, namely suicidal ideation and an attempt to alleviate her experience of suffering. The strength of the marital bond, possibly as a result of the intervention, and the efforts of the multidisciplinary team approach, demonstrate potential to mitigate a catastrophic end of life and a complicated spousal bereavement. This case study adds to the current empirical literature in an area that is currently under-studied and under-reported.

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