常见力学试验结果与聚乙烯燃气管道力学破坏的关系.pdfVIP

第43 卷第 12 期 塑料工业 .93. 2015 年 12 月 CHINA PLASTICS INDUSTRY 常见力学试验结果与聚乙烯燃气管道力学破坏的关系* 王 晓，尹宗杰，张胜军，辛明亮，李茂东 (广州特种承压设备检测研究院，广东广州 51侃63 ) 摘要:明确相关力学性能与力学破坏之间的关系，建立和健全相关标准对聚乙烯燃气管道的健康发展至关重要。 在定向钻孔技术安装聚乙烯燃气管时，在计算允许牵引力和牵引长度时，使用与牵引速度相当的速度条件下得到的拉 伸强度和屈服应力作为依据。冲击强度和 Bell 法耐环境应力开裂试验与聚乙烯燃气管的实际应用关系不大。 关键词:聚乙烯燃气管道:力学试验;力学破坏 DOI: 10. 3969/j. issn. I∞5-5770.2015.12.021 中图分类号: TQ325.1 文献标识码:A 文章编号: I∞5-5770 (2015) 12-α阴-02 The Relationship between Results of Common Mechanical Test with Polyethylene Gas Pipeline Mechanical Failure WANG Xiao , YIN Zong-jie , ZHANG Sheng-jun , XIN Ming-liang , U Mao-dong ( Guangzhou Special Pressure Equipment Inspection and Research Institute , Guangzhou 51侃63 ， China) Abstract: It is essential for the healthy development of polyethylene gas pipe to clear the relationship between the mechanicaI properties and mechanicaI damage and to establish and improve standards. When computing aIlowed traction and traction length in the installation polyethylene gas pipe by using the directionaI drilling technology , the tensile strength and yield stress which are obtained at a comparable rate with the traction speed are used as the basis. The impact strength and 8ell resistance to environmental stress have little relationship with the mechanical damage of polyethylene gas pipe in the practic aI application. Keywor也: Polyethylene Gas Pipe; Mechanical Test; Mechanical Damage 具以及运行中的维修手段等在多年的实践中，已达到 20 世纪在管道领域发生了一场革命性的进步， 完善的配套系统[3] 。时至今日，在燃气领域，无论 即以塑代钢..[1] 。随着高分子材料科学技术的飞跃