Thermal-mechanical fatigue test apparatus for metal matrix composites and joint attachmentsTwo thermal-mechanical fatigue (TMF) test facilities were designed and developed, one to test tungsten fiber reinforced metal matrix composite specimens at temperature up to 1430C (2600F) and another to test composite/metal attachment bond joints at temperatures up to 760F (1400F). The TMF facility designed for testing tungsten fiber reinforced metal matrix composites permits test specimen temperature excursions from room temperature to 1430C (2600F) with controlled heating and loading rates. A strain-measuring device measures the strain in the test section of the specimen during each heating and cooling cycle with superimposed loads. Data is collected and recorded by a computer. The second facility is designed to test composite/metal attachment bond joints and to permit heating to a maximum temperature of 760C (1400F) within 10 min and cooling to 150C (300F) within 3 min. A computer controls specimen temperature and load cycling.
Document ID
19890028356
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Westfall, Leonard J. (NASA Lewis Research Center Cleveland, OH, United States)
Petrasek, Donald W. (NASA Lewis Research Center Cleveland, OH, United States)