Reliability Evaluation of Improved Sampling Method for Mechanical Test of Cable Insulation
Underground and submarine power cables are subjected to mechanical stress during installation and operation, which degrades the cable insulation and reduces the reliability of power transmission. Therefore, tests that can evaluate the mechanical properties of power cable insulation are very importan...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-02-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/18/4/982 |
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| author | Seung-Won Lee Jin-Wook Choe Ik-Su Kwon Jin-Seok Lim Byung-Bae Park Hae-Jong Kim |
| author_facet | Seung-Won Lee Jin-Wook Choe Ik-Su Kwon Jin-Seok Lim Byung-Bae Park Hae-Jong Kim |
| author_sort | Seung-Won Lee |
| collection | DOAJ |
| description | Underground and submarine power cables are subjected to mechanical stress during installation and operation, which degrades the cable insulation and reduces the reliability of power transmission. Therefore, tests that can evaluate the mechanical properties of power cable insulation are very important. The purpose of this paper is to introduce an improved sampling method for the test sample, the peeling, for mechanical testing of power cable insulation and to evaluate the reliability of the method. The influence of the sampling method of the test sample on the mechanical property values was analyzed. The tensile strength and elongation of XLPE (cross-linked polyethylene) and PP (polypropylene) insulation prepared by the slice method and the peeling method were measured, and the surface of the test samples according to the sampling methods was photographed by SEM. The results show that the mechanical property of the cable insulation increased by more than 10% when the improved peeling method was used, and the precision of the peeling method was relatively better. The SEM analysis showed that the surface of the sliced test sample was rougher than the peeled test sample and was physically damaged. Therefore, the high reliability of the peeling method for mechanical testing of cable insulators was demonstrated. |
| format | Article |
| id | doaj-art-4bfb16b87edb45988ebc2ec431a6d8f1 |
| institution | DOAJ |
| issn | 1996-1073 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj-art-4bfb16b87edb45988ebc2ec431a6d8f12025-08-20T02:44:56ZengMDPI AGEnergies1996-10732025-02-0118498210.3390/en18040982Reliability Evaluation of Improved Sampling Method for Mechanical Test of Cable InsulationSeung-Won Lee0Jin-Wook Choe1Ik-Su Kwon2Jin-Seok Lim3Byung-Bae Park4Hae-Jong Kim5Power Cable Research Center, Korea Electrotechnology Research Institute, Changwon-si 51543, Republic of KoreaPower Cable Research Center, Korea Electrotechnology Research Institute, Changwon-si 51543, Republic of KoreaPower Cable Research Center, Korea Electrotechnology Research Institute, Changwon-si 51543, Republic of KoreaPower Cable Research Center, Korea Electrotechnology Research Institute, Changwon-si 51543, Republic of KoreaPower Cable Research Center, Korea Electrotechnology Research Institute, Changwon-si 51543, Republic of KoreaPower Cable Research Center, Korea Electrotechnology Research Institute, Changwon-si 51543, Republic of KoreaUnderground and submarine power cables are subjected to mechanical stress during installation and operation, which degrades the cable insulation and reduces the reliability of power transmission. Therefore, tests that can evaluate the mechanical properties of power cable insulation are very important. The purpose of this paper is to introduce an improved sampling method for the test sample, the peeling, for mechanical testing of power cable insulation and to evaluate the reliability of the method. The influence of the sampling method of the test sample on the mechanical property values was analyzed. The tensile strength and elongation of XLPE (cross-linked polyethylene) and PP (polypropylene) insulation prepared by the slice method and the peeling method were measured, and the surface of the test samples according to the sampling methods was photographed by SEM. The results show that the mechanical property of the cable insulation increased by more than 10% when the improved peeling method was used, and the precision of the peeling method was relatively better. The SEM analysis showed that the surface of the sliced test sample was rougher than the peeled test sample and was physically damaged. Therefore, the high reliability of the peeling method for mechanical testing of cable insulators was demonstrated.https://www.mdpi.com/1996-1073/18/4/982power cableXLPEPPSEMinsulationtensile strength |
| spellingShingle | Seung-Won Lee Jin-Wook Choe Ik-Su Kwon Jin-Seok Lim Byung-Bae Park Hae-Jong Kim Reliability Evaluation of Improved Sampling Method for Mechanical Test of Cable Insulation Energies power cable XLPE PP SEM insulation tensile strength |
| title | Reliability Evaluation of Improved Sampling Method for Mechanical Test of Cable Insulation |
| title_full | Reliability Evaluation of Improved Sampling Method for Mechanical Test of Cable Insulation |
| title_fullStr | Reliability Evaluation of Improved Sampling Method for Mechanical Test of Cable Insulation |
| title_full_unstemmed | Reliability Evaluation of Improved Sampling Method for Mechanical Test of Cable Insulation |
| title_short | Reliability Evaluation of Improved Sampling Method for Mechanical Test of Cable Insulation |
| title_sort | reliability evaluation of improved sampling method for mechanical test of cable insulation |
| topic | power cable XLPE PP SEM insulation tensile strength |
| url | https://www.mdpi.com/1996-1073/18/4/982 |
| work_keys_str_mv | AT seungwonlee reliabilityevaluationofimprovedsamplingmethodformechanicaltestofcableinsulation AT jinwookchoe reliabilityevaluationofimprovedsamplingmethodformechanicaltestofcableinsulation AT iksukwon reliabilityevaluationofimprovedsamplingmethodformechanicaltestofcableinsulation AT jinseoklim reliabilityevaluationofimprovedsamplingmethodformechanicaltestofcableinsulation AT byungbaepark reliabilityevaluationofimprovedsamplingmethodformechanicaltestofcableinsulation AT haejongkim reliabilityevaluationofimprovedsamplingmethodformechanicaltestofcableinsulation |