• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >EFFECT OF TEMPERATURE ON FRACTURE TOUGHNESS OF PC/ABS BASED ON J-INTEGRAL AND HYSTERESIS ENERGY METHODS
【24h】

EFFECT OF TEMPERATURE ON FRACTURE TOUGHNESS OF PC/ABS BASED ON J-INTEGRAL AND HYSTERESIS ENERGY METHODS

机译：基于J积分和迟滞能量法的温度对PC / ABS断裂韧性的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The critical fracture toughness J(1c) of the polycarbonate (PC)/acrylonitrile-butadiene-styrene (ABS) blend at different temperatures was obtained from ASTM E813-81, E813-87, and the recently developed hysteresis energy methods, respectively. The J(1c) value increases with increase of the test temperature ranging from -60 to 70 degrees C. The hysteresis energy method and the ASTM E813-81 method result in comparable J(1c) values, while the ASTM E813-87 results in about 80-110% higher values. The critical initiation displacements determined from the plots of hysteresis energy and the true crack growth length vs. crosshead displacement are very close. This indicates that the critical initiation displacement deter mined by the hysteresis method is indeed the displacement at the onset of true crack initiation and the corresponding J(1c) represents a physical event of crack initiation. The fracture toughness, K-1c value, based on linear elastic fracture mechanics (LEFM), was determined by using K-Q analysis (ASTM E399-78), and the obtained K-Q value decreases with the increase of the test temperature. The K-Q value is not the real LEFM K-1c value because the criterion of P-max/P-Q < 1.1 has not been satisfied. However, the corresponding J(Q) obtained from the K-Q analysis is comparable to the J(1c) obtained from the E813-81 method at lower temperature (-45 or -60 degrees C), an indication of LEFM behavior at lower temperature. The various schemes and size criterion based on LEFM and the J-method are explored for the validity of J(1c) and K-1c values. (C) 1996 John Wiley & Sons, Inc. [References: 39]
机译：聚碳酸酯（PC）/丙烯腈-丁二烯-苯乙烯（ABS）共混物在不同温度下的临界断裂韧性J（1c）分别从ASTM E813-81，E813-87和最近开发的磁滞能量方法获得。 J（1c）值随测试温度从-60到70摄氏度的增加而增加。磁滞能量法和ASTM E813-81方法得出的J（1c）值相当，而ASTM E813-87得出的结果是可比较的。约高80-110％。由磁滞能量图和实际裂纹扩展长度与十字头位移的关系图确定的临界初始位移非常接近。这表明，由磁滞方法确定的临界起爆位移确实是真正的裂纹起爆时的位移，而相应的J（1c）表示裂纹起爆的物理事件。基于线性弹性断裂力学（LEFM）的断裂韧度K-1c值是使用K-Q分析（ASTM E399-78）确定的，所得K-Q值随测试温度的升高而降低。 K-Q值不是真实的LEFM K-1c值，因为尚未满足P-max / P-Q <1.1的标准。但是，从K-Q分析获得的相应J（Q）与在较低温度（-45或-60摄氏度）下从E813-81方法获得的J（1c）相当，这表明在较低温度下LEFM行为。探索了基于LEFM和J方法的各种方案和大小准则，以验证J（1c）和K-1c值的有效性。 （C）1996 John Wiley＆Sons，Inc. [参考：39]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号