High-Temperature Creep Testing Method using Small Sample Specimens

使用小样本的高温蠕变测试方法

• 批准号: 22560072
• 负责人: KOBAYASHI Kenichi
• 金额: $ 2.75万
• 依托单位: Chiba University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22560072/
• 关键词: 微小クリープ; 余寿命診断; 試験法; スモール・パンチ; クリープ; 微小サンプル; 余寿命評価; SPC試験法; 環境効果; 硬さ; 数値解析; SP試験法

Small Punch Creep (SPC) test is one of the semi-destructive tests employing miniature specimens. Some factors of the SPC test affecting test results were experimentally studied.It was found that rupture lives conducted in air were quite different from those in vacuumwhen the rupture life was shorter than 1000 hours. This result depended on the influenceof the oxide film and the coefficient of friction. However, there was a good relation betweenthe stress in the conventional uni-axial creep test and the load in the SPC test when therupture rife was the same. This relationship helps to evaluate remaining creep life oflong-term serviced components under elevated temperatures.

小冲击蠕变（SPC）试验是一种采用微型试样的半破坏性试验。对SPC试验中影响试验结果的几个因素进行了实验研究。当断裂寿命小于1000小时时，在空气中进行的断裂寿命与在真空中进行的断裂寿命有很大的不同。这一结果取决于氧化膜和摩擦系数的影响。而在断裂速率相同的情况下，常规单轴蠕变试验中的应力值与SPC试验中的载荷值之间存在较好的关系。这种关系有助于评估高温下长期服务部件的剩余蠕变寿命。

项目成果

Influence of Testing Environment and Radius of Die Shoulder on SP Creep RuptureLife

试验环境和模肩半径对SP蠕变断裂寿命的影响

• 发表时间: 2011
• 作者: Ken-ichi Kobayashi;Masahiro Kaneko,Hideo Koyama;Gavin C. Stratford and Masaaki Tabuchi
• 通讯作者: Gavin C. Stratford and Masaaki Tabuchi

Influenceof Testing Environment on SP Creep RuptureLives

试验环境对SP蠕变断裂寿命的影响

• 发表时间: 2013
• 作者: 川崎文也;矢久保考介;M.Nagata;落合芳博;Ken-ichi Kobayashi and Sho Takei
• 通讯作者: Ken-ichi Kobayashi and Sho Takei

Influence of Testing Environment on SP Creep Rupture Lives

试验环境对SP蠕变断裂寿命的影响

• 发表时间: 2013
• 作者: Kexin CHANG;Yuki OHMURA;Osamu WATANABE;Akihiro MATSUDA;K.Deguchi;落合芳博;Ken-ichi Kobayashi and Sho Takei
• 通讯作者: Ken-ichi Kobayashi and Sho Takei

The Influence of Both Testing Environment and Fillet Radius of Die Holder on the Rupture Life of Small Punch Creep Tests

试验环境和模座圆角半径对小冲头蠕变试验断裂寿命的影响

• 发表时间: 2012
• 期刊: Journal of Solid Mechanics and Materials Engineering
• 作者: Ken-ichi Kobayashi;Masahiro Kaneko;Hideo Koyama;Gavin C. Stratford and Masaaki Tabuchi
• 通讯作者: Gavin C. Stratford and Masaaki Tabuchi

SPクリープ試験における変形,破壊とその影響因子

SP蠕变试验中的变形、断裂及其影响因素

• 发表时间: 2011
• 作者: Ken-ichi Kobayashi;Masahiro Kaneko,Hideo Koyama;Gavin C. Stratford and Masaaki Tabuchi;落合芳博,玉井伸典;S. Ono and H. Shima;Osamu Watanabe;小林謙一
• 通讯作者: 小林謙一