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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Attitudinal perception of cosmetic wear and damage of materials within the use phase of portable electronic products

Manley, Alan H. G. January 2018 (has links)
During the use phase of products, a series of obsolescing factors contribute to why a product is disposed of. Currently the visual state of a product is considered primarily in terms of aesthetic obsolescence which is synonymous with influential factors such as changes in fashion or personal preferences in style. The physical condition of a product is not commonly understood within the context of product replacement and the physical changes due to use are not understood fully. The research contributes to and provides original empirical research findings for the current literature on product lifetime extension, material semantics, the circular economy, emotionally durable design and material culture. Through an initial exploratory study (Photographic Analysis (PA) Study) of previously unexplained types of wear and damage that occur on portable electronic devices a taxonomy of damage (TOD) was established which provided the nomenclature for further studies. The second study (Retrospective Assessment (RA) Study) established the attitudes to wear based on the wear type, location, material and the stage during ownership that the wear occurred at. The RA Study highlighted the differences in the attitudinal responses to differing types of wear and damage and identified the differences in the temporal assessments of wear and damage. A third study (Real Time Assessment (RTA) Study) aimed to confirm or repudiate the findings found in the RA Study. The focus during the study was attitudes to the wear and damage in relation to the differences in materials, the location of the wear and the type of wear and damage was also looked at and led to a fuller understanding of how products and materials are perceived during the use phase; a stage of the product lifetime that is not currently well understood in terms of users aesthetic or cosmetic sensibilities. The final study (Semantic Perception of Materials (SPM) Study) focused on the visual and tactile perceptions of materials. The study established attitudinal perceptions of wear and damage of materials with a quantitative research methodology which has produced a better understanding of material semantics within the context of electronic objects. Through the four studies, discussion topics arose and major findings of the doctoral study were drawn out and seen to be interesting enough for further research and study. These discussions include the importance of including cosmetic obsolescence into the lexicon of product obsolescence and product lifetime extension literature, the differences in the perceptions of materials when they are within the context of a product or being assessed as samples, how differing product contexts affect user perceptions of wear and damage on materials and the potential inclusion of a material wear index that could inform the material selection process that goes further than the technical aspects outlined in current material selection tools and literature.
2

Developing a Components List for a Shoe Repair Kit for Leather Sneakers, Designed for Consumer Use

Gustafsson, Izabell, Nordholm, Ellen January 2023 (has links)
This thesis is being conducted by two final year Bachelor degree students, collaborating with a Swedish fashion brand producing leather sneakers with the aim to investigate the most common wear and tear of shoes in metropolitan and suburban environments. Shoes are readily known for having a relatively short product lifecycle and with few alternatives to prolong the materials usefulness at the end. Furthermore consumers find that the main problems that make them not want to repair, are mainly financial reasons and a lack of knowledge in repair methods. This study has conducted a survey to gain information of the most common wear and tears regarding shoes in order to meet what the consumers want for products in a repair kit. The study involved a qualitative interview about material expertise about the shoes used in this study with selected and qualified respondents from the fashion brand company. The data collected was sufficient to create a product list for a repair-kit and shows a PU-solution to repair damaged leather, heel patches to repair ripped lining, a cyanoacrylate glue to mend detached/broken outsoles and an informational manual should be the main components for the repair kit. This study is designed to work as a future recommendation specification of requirements to the company this study is collaborating with to prolong the time of usage for the shoes.
3

Product Lifetime Extension - Identifying and investigating the opportunities and challenges presented by business and customers in extending product lifetime from a circular economy perspective / Förlängning av produktens livslängd - Identifiera och undersöka de möjligheter och utmaningar som företag och kunder presenterar för att förlänga produktens livslängd ur ett cirkulärt ekonomi perspektiv

Jannusi, Tarek, Paul, Hrishav January 2022 (has links)
In order to meet the needs of the generations to come and to achieve the global target of maximum climate change of 1.5 degrees, we need to transform the way the society consumes natural resources. The purpose of this research is to effectively align the needs of the businesses and customers alike to accelerate a market-driven resource efficiency. We also intended to investigate what the opportunities presented to businesses are, in order to achieve environmental and economic sustainability by extending the product lifetime and improving accessibility of spares/repairs/upgrades, etc. for their products. We performed an extensive review of literature in the past two decades which describe product lifetime, obsolescence of products and the various reasons of obsolescence in the larger picture. The study is a mixed approach as we gathered data from the partner businesses by way of semi-structured interviews at the management level. We carried out a survey with a potential consumer group of these products and analysed the requirements and habits of the market. Our findings suggest that the primary driving causes for optimizing the product lifetimes of the products have been ethical and social responsibilities of the businesses. Businesses acknowledge that legislative and market pressure has increased over the past half-decade but hasn’t been enough to motivate the investments required to restructure products and business models. Businesses need to improve the statistical data they acquire from products after they have been sold, in order to facilitate the streamlining of the reverse supply chains. Lastly, we have found that the top management is committed and engaged to change the way the business functions, but the ground functions are either not aware or trained to effectively implement the changes. Future research could investigate the readiness of businesses to transition to a more closed-loop business model by way of improving information flow through the lifetime of the product. / För att bemöta kraven hos de kommande generationer och för att uppnå det globala målet om en maximal klimatförändring på 1,5 grader, måste det ske en förändring på hur samhället konsumerar naturresurser. Syftet med denna forskning och studie är att effektivt anpassa behoven hos såväl kunden som företag för att påskynda en marknadsdriven resurseffektivitet. Med denna studie har vi också för avsikt att undersöka vilka möjligheter som erbjuds till företag, för att uppnå miljömässig och ekonomisk hållbarhet genom att förlänga produktens livslängd och förbättra cängligheten för reservdelar/reparationer/uppgraderingar etc. av deras produkter. Vi gjorde en omfattande litteraturgenomgång av forskning under de senaste två decennierna som beskriver produktens livslängd, produkters inkurans och de olika orsakerna till inkurans i den större bilden. Detta hjälpte oss att ta fram en konkret definition av produktens livslängd och hur den kan förbättras med bättre material, design och ökade återvinnings aktiviteter på produktnivå. Våra resultat tyder på att de främsta drivande orsakerna till att optimera produkt livslängden för produkterna i fråga har varit företagens etiska och sociala ansvar. Företagen erkänner att lagstiftnings- och marknads trycket har ökat under de senaste 5 åren, men det har inte varit tillräckligt för att motivera de investeringar som krävs för att omstrukturera produkter och affärsmodeller. Företag måste förbättra de statistiska uppgifter som de skaffar från produkter efter att de har sålts, för att underlätta effektiviseringen. Slutligen har vi funnit att den högsta ledningen är engagerad i att förändra hur verksamheten fungerar, men markfunktionerna är antingen inte medvetna eller utbildade för att effektivt implementera förändringarna. Framtida forskning skulle kunna undersöka företagens beredskap att övergå till en mer sluten affärsmodell genom att förbättra informationsflödet genom produktens livslängd.

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