PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING 2025 Vol. 61 No. 4

The influence of working parameters on the quality of scanning electron microscopy images of non-conductive paper samples

WANG Yan

2025, 61(4): 1-5. DOI: 10.11973/lhjy-wl240060

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The Influence of impact line defects on the appearance quality of coating on automotive exterior panels

LONG Yuan, HAN Longshuai, FENG Liwei, LI Xiaojun, HAO Yulin, BAI Kefei

2025, 61(4): 6-12. DOI: 10.11973/lhjy-wl240053

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The influence of sample types and clamping methods on the tensile test results of tungsten copper alloy

GU Yingjie, LI Taiyou, YU Xiang, ZHANG Ji, CHEN Qianfen

2025, 61(4): 13-18. DOI: 10.11973/lhjy-wl240052

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Fatigue behavior and life prediction of bolt connections based on ABAQUS software

GAO Xuemin, YIN Xiaojian, ZHOU Honglei, SHI Dapeng, ZHANG Qinying, HU Yunpeng

2025, 61(4): 19-25. DOI: 10.11973/lhjy-wl240325

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The influence of sampling location and natural climate on the oxidation induction time of polyethylene pipes

ZHAO Senlong, XU Zhe, XIA Xiaofei, ZHANG Zengyu, XIA Haoyu, MA Yuanen, YE Nianting, HE Huabin

2025, 61(4): 26-29. DOI: 10.11973/lhjy-wl240056

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Evaluation of uncertainty in rockwell hardness measurement of purple copper tube

ZHONG Jinde

2025, 61(4): 30-32. DOI: 10.11973/lhjy-wl240293

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Uncertainty evaluation of crack length measurement in compact tensile specimens using unloading flexibility method

CHENG Bingwu

2025, 61(4): 33-36. DOI: 10.11973/lhjy-wl240348

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Measurement uncertainty of dual extensometer and strain gauge coaxiality testers

YIN Sibo, LI Zheng, FENG Shengshun

2025, 61(4): 37-42. DOI: 10.11973/lhjy-wl250065

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Reason for bolt fracture of grinding roller shaft in medium speed coal mill

SHI Haiyan, SHI Xiaoqi

2025, 61(4): 43-46. DOI: 10.11973/lhjy-wl240024

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Reason for tooth breakage of the gear shaft end gear disc of the compressor

LI Ming, LIU Xide, LI Jinhong, MA Yu

2025, 61(4): 47-51. DOI: 10.11973/lhjy-wl240026

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Reasons for leakage of medical dilution tank

XU Yang, DANG Hengyao, XU Guozhao, WANG Lei, FANG Junji

2025, 61(4): 52-54. DOI: 10.11973/lhjy-wl240050

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Reasons for fracture of QT500-7 ductile iron planetary carrier

FENG Zhiming, XUE Wenpu, FENG Yinping, ZHANG Shenjie, WANG Xiaopei, ZUO Yi

2025, 61(4): 55-58. DOI: 10.11973/lhjy-wl240127

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Reasons for cracking of reboiler tube plate

CHEN Jing, KONG Fanyang, XU Tiequn, CHEN Huaining

2025, 61(4): 59-63. DOI: 10.11973/lhjy-wl240012

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Microscopic characteristics of scratch defects in strip steel coiling under different processes

CHEN Xing, LIU Shaoxian, WANG Junfeng

2025, 61(4): 64-68. DOI: 10.11973/lhjy-wl240338

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Reason for the detachment of the anti fall T-shaped guide rail of a certain transmission line tower

DANG Le, DONG Junqian, ZHANG Wei, CUI Yaru, SHANG Xin

2025, 61(4): 69-74. DOI: 10.11973/lhjy-wl240084

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Reasons for chain breakage of slag scraper in thermal power generation unit

LI Jing, ZHOU Hao, ZHOU De

2025, 61(4): 75-78. DOI: 10.11973/lhjy-wl240090

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Reason for the fracture of the wrench

ZHAO Xueqian, NIU Mingyue, HU Hanting, MAO Kuanliang, WANG Bo

2025, 61(4): 79-81. DOI: 10.11973/lhjy-wl240014

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Causes of 15CrMoG steel water cooled wall pipe burst

ZHANG Lu, MENG Xinming, LAI Yunting

2025, 61(4): 82-85. DOI: 10.11973/lhjy-wl240013

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