Active disassembly using shape memory polymers for the mobile phone industry

Chiodo, J.D.; Billett, Eric; Harrison, DJ

doi:10.1109/isee.1999.765867

Cited by 35 publications

(24 citation statements)

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“…Chiodo et al [9][10][11][12] and Arnaiz et al [2] applied this technology for the disassembly of a range of products, among which different types of telephones. These products were designed with shape memory snap fits.…”

Section: Active Disassembly Oriented Fastener Solutionsmentioning

confidence: 99%

Efficiency and feasibility of product disassembly: A case-based study

et al. 2008

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Section: Active Disassembly Oriented Fastener Solutionsmentioning

confidence: 99%

Efficiency and feasibility of product disassembly: A case-based study

et al. 2008

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“…Significant part of the research on AD yet is based on shape memory materials, which are able to return to an initial shape when heated above the trigger temperature [27][28][29][30][31][32]. One case of industrial implementation, albeit discontinued, concerns shape memory alloy (SMA) fasteners in a Sharp mobile phone charger, named "Easy Release Technology" [7,8].…”

Section: Temperaturementioning

confidence: 99%

Pressure-sensitive fasteners for active disassembly

Peeters

Bossche

Devoldere

et al. 2015

Int J Adv Manuf Technol

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This paper presents a number of novel active fasteners developed to significantly lower disassembly costs during reconditioning, remanufacturing, and recycling of products. In the initial stage of the fastener development process, the applicability of distinct trigger signals for active disassembly (AD) is evaluated. Based on this evaluation, the high robustness of using a pressure increase or decrease as a nondestructive trigger for AD is demonstrated. Since previously proposed pressure-sensitive fasteners face considerable drawbacks upon implementation in electronic products due to the ongoing trend of miniaturization, a second generation of pressure-based active fasteners is developed. Evaluation of these fasteners by means of axiomatic design techniques and prototyping demonstrates that the presented snap-fits, which make use of a closed-cell elastomer foam, are most robust. Subsequently, the contraction forces that closed-celled foams can exert as a function of an increase in ambient air pressure are experimentally determined. Furthermore, the implementation of pressure-sensitive foam-based snap-fits in both a modem and a payment terminal is described. Results of these experiments demonstrate that the contraction force of a cross-linked metallocene polyethylene closed-cell foams can reach up to 6 N/cm 2 at an overpressure of 2 bar and that the foam-based snap-fits can be released at a pressure increase of 2 bar.

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“…Automated disassembly uses automation or robotics to disassemble products. The use of automated machines and robotics increases the efficiency in which products are disassembled, but the flexibility of disassembly is lost and capital cost can be high (Langerak 1997, Chiodo et al 1998a, 1999b, Hussein 2003.…”

Section: Manual Disassembly and Automated Disassemblymentioning

confidence: 99%

“…The holding brackets replaced conventional screw assemblies and would release their hold on the housing once they were above the transition temperature. The group designed SMP mechanical property loss (MPL) screws to disassemble Nokia 6110 and Nokia Populus cell phones (Chiodo et al 1999a), a game controller, a clock radio and a CD player (Chiodo et al 1999b). MPL screws will become very pliable when the SMP is above its T x temperature and will essentially lose their threading ( Figure 5).…”

Section: Brunel Universitymentioning

confidence: 99%

Review and future of active disassembly

Carrell

Zhang

Tate

et al. 2009

International Journal of Sustainable Engineering

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Disassembly has been widely accepted as a disadvantageous end-of-life activity, but with increasing pressures from directives, such as waste on electrical and electronic equipment, and with increasing pressures to become sustainable disassembly is becoming necessary. Current disassembly methods, including both manual and automated disassembly, need improvements to meet this necessity. This paper will introduce the improvements needed and suggest through literature the validity of active disassembly (AD) to provide these improvements. Past and current research will also be considered to provide a future path for AD. This future path for AD will consider a collaborative effort to solve problems with materials, environmental triggers and costs seen with AD.

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Active disassembly using shape memory polymers for the mobile phone industry

Cited by 35 publications

References 0 publications

Efficiency and feasibility of product disassembly: A case-based study

Efficiency and feasibility of product disassembly: A case-based study

Pressure-sensitive fasteners for active disassembly

Review and future of active disassembly

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