引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 334次   下载 188 本文二维码信息
码上扫一扫!
分享到: 微信 更多
高密度聚乙烯管道对接接头断裂参量统计分布
齐芳娟1, 霍立兴2, 张玉凤2, 荆洪阳2, 赵海深3
1.石家庄铁道学院材料科学与工程系, 石家庄 050043;2.天津大学材料科学与工程学院, 天津 300072;3.亚大塑料制品有限公司, 河北 涿州 072761
摘要:
以裂纹张开位移(crack opening displacement)特征值参量为基础,对国内燃气工业中应用日益普及的高密度聚乙烯(HDPE)管道热熔对接接头的抗开裂特性参量的分散性及统计分布进行了研究。结果表明,HDPE热熔对接接头在低温下,其抗开裂参量饱和启裂COD值具有一定的分散性。对其进行拟合统计检验结果表明,三参数威布尔分布为其最佳拟合分布。并且,随着温度的降低,抗开裂参量的数据的分散性变小。
关键词:  裂纹张开位移  高密度聚乙烯燃气管道  热熔对接接头  三参数威布尔分布
DOI:
分类号:
基金项目:国家自然科学基金资助项目(50075063)
Statistic distribution of resistance to initiation property of high density polyethylene gas pipe butt-fusion welded joint
QI Fang-juan1, HUO Li-xing2, ZHANG Yu-feng2, JING Hong-yang2, ZHAO Hai-shen3
1.Materials Science and Engineering Department, Shijiazhuang Railway Institute, Shijiazhuang 050043, China;2.School of Materials Science and Engineering, Tianjing University, Tianjin 300072, China;3.Chinaust Plastic CO.LTD., Zhuozhou 072716, Hebei, China
Abstract:
The statistic distribution of the resistance to initiation property of HDPE(high density polyethylene) pipe butt-fusion welded joint was investigated on the basis of Crack Opening Displacement(COD).The results show that the saturation initial crack COD δis of HDPE butt-fusion welded joint have the statistic variance inherently.The statistic probabilistic model was set up to fit the distribution function of δis.Performed several statistic tests,the results show that the optimum fitting distribution of δis weibull distribution with three parameters.The variance of test results decreases with decreasing temperature.
Key words:  crack opening displacement  high density Polyethylene gas pipe  butt-fusion welded joint  weibull distribution with three parameters