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Computer-Aided Reengineering towards Plastic Part Failure Minimization
The work reported here intends to identify and mitigate the causes for failure in a plastic faucet holder, a part of an integral float faucet with a well-documented history of fracture occurrence. A methodology for the identification of hidden internal defects in plastic parts and the elaboration of...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8585237/ https://www.ncbi.nlm.nih.gov/pubmed/34771830 http://dx.doi.org/10.3390/ma14216303 |
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author | Pinho, Tiago Zhiltsova, Tatiana Oliveira, Mónica Costa, Andreia |
author_facet | Pinho, Tiago Zhiltsova, Tatiana Oliveira, Mónica Costa, Andreia |
author_sort | Pinho, Tiago |
collection | PubMed |
description | The work reported here intends to identify and mitigate the causes for failure in a plastic faucet holder, a part of an integral float faucet with a well-documented history of fracture occurrence. A methodology for the identification of hidden internal defects in plastic parts and the elaboration of the required corrective actions towards quality improvement is, therefore, presented. Firstly, part defects were identified via injection moulding process numerical simulation. The latter has enabled the prediction of an excessive volumetric shrinkage at the core of the faucet holder, highlighting the presence of internal voids and, hence, the possible deterioration of the load-bearing capacity. The supposition was later confirmed by X-ray topography scans. Part reengineering, consisting of localized thickness reduction, was the option chosen for decreasing the high shrinkage at the core. For validation purposes, structural analyses were carried out, with and without accounting for the injection moulding processing history. The results obtained during part structural analysis have enabled us to conclude that, when taking into account the residual stresses generated during injection moulding, the analysis more closely reflects the experimental data and allows us to implicitly envisage the propensity to fracture. Moreover, the part modifications, undertaken during the faucet holder reengineering, led to the reduction of the cumulative (processing and imposed by load) stresses by 50%, when compared to the original design analysed. |
format | Online Article Text |
id | pubmed-8585237 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-85852372021-11-12 Computer-Aided Reengineering towards Plastic Part Failure Minimization Pinho, Tiago Zhiltsova, Tatiana Oliveira, Mónica Costa, Andreia Materials (Basel) Article The work reported here intends to identify and mitigate the causes for failure in a plastic faucet holder, a part of an integral float faucet with a well-documented history of fracture occurrence. A methodology for the identification of hidden internal defects in plastic parts and the elaboration of the required corrective actions towards quality improvement is, therefore, presented. Firstly, part defects were identified via injection moulding process numerical simulation. The latter has enabled the prediction of an excessive volumetric shrinkage at the core of the faucet holder, highlighting the presence of internal voids and, hence, the possible deterioration of the load-bearing capacity. The supposition was later confirmed by X-ray topography scans. Part reengineering, consisting of localized thickness reduction, was the option chosen for decreasing the high shrinkage at the core. For validation purposes, structural analyses were carried out, with and without accounting for the injection moulding processing history. The results obtained during part structural analysis have enabled us to conclude that, when taking into account the residual stresses generated during injection moulding, the analysis more closely reflects the experimental data and allows us to implicitly envisage the propensity to fracture. Moreover, the part modifications, undertaken during the faucet holder reengineering, led to the reduction of the cumulative (processing and imposed by load) stresses by 50%, when compared to the original design analysed. MDPI 2021-10-22 /pmc/articles/PMC8585237/ /pubmed/34771830 http://dx.doi.org/10.3390/ma14216303 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Pinho, Tiago Zhiltsova, Tatiana Oliveira, Mónica Costa, Andreia Computer-Aided Reengineering towards Plastic Part Failure Minimization |
title | Computer-Aided Reengineering towards Plastic Part Failure Minimization |
title_full | Computer-Aided Reengineering towards Plastic Part Failure Minimization |
title_fullStr | Computer-Aided Reengineering towards Plastic Part Failure Minimization |
title_full_unstemmed | Computer-Aided Reengineering towards Plastic Part Failure Minimization |
title_short | Computer-Aided Reengineering towards Plastic Part Failure Minimization |
title_sort | computer-aided reengineering towards plastic part failure minimization |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8585237/ https://www.ncbi.nlm.nih.gov/pubmed/34771830 http://dx.doi.org/10.3390/ma14216303 |
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