2010 Fiscal Year Final Research Report

Development of an ultrasonic fatigue testing machine at high temperature up to 1000℃

Research Project

Project/Area Number	21760089
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Single-year Grants
Research Field	Materials/Mechanics of materials
Research Institution	National Institute for Materials Science
Principal Investigator	FURUYA Yoshiyuki National Institute for Materials Science, 材料信頼性センター, 主幹研究員 (60354255)
Project Period (FY)	2009 – 2010
Keywords	疲労 / ギガサイクル疲労 / 超音波疲労試験 / 高温
Research Abstract	An ultrasonic fatigue testing machine for high temperature fatigue tests was developed. This machine can be operated up to 1000℃. In carrying out high temperature ultrasonic fatigue testing, careful attention must be paid to temperature effects on elastic modulus, horn design and so on. In this study, all of these problems were solved and validity of the developed machine was confirmed. More specifically, ultrasonic fatigue tests were conducted on heat resistance steel for boiler at 650℃ and on Ni-base single crystal superalloy for turbine blade at 1000℃. As the result, the ultrasonic fatigue testing show good agreements with conventional fatigue testing.

(1 results)