Accession Number : AD0429004


Title :   INVESTIGATION OF THE BASIC MECHANISM OF METAL FATIGUE


Descriptive Note : Quarterly engineering progress rept. no. 2, 1 Oct-31 Dec 1963


Corporate Author : REPUBLIC AVIATION CORP FARMINGDALE NY


Personal Author(s) : Hyatt, Barry Z ; Teutonico, Louis J


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/429004.pdf


Report Date : 23 Jan 1964


Pagination or Media Count : 41


Abstract : Improved methods were devised for electrochemical cutting and chemical polishing of single crystal copper test specimens. The mechanical loading system designed for the cyclic deformation of single crystals was calibrated and the reliability of strain measurements was determined. Measurements were made of the attenuation of longitudinal waves propagating through 110 oriented single crystals of copper during cyclic deformation. A general review 'The Use of High Frequency Ultrasonic Measurements to Study the Effects of Dislocations on the Mechanical Properties of Crystalline Solids' is included as an Appendix.


Descriptors :   *CRYSTAL DEFECTS , *VELOCITY , LOADING(ORDNANCE PROJECTORS) , ATTENUATION , CRYSTAL GROWTH , ELECTROEROSIVE MACHINING , DAMPING , DEFORMATION , COPPER


Subject Categories : Military Aircraft Operations
      Crystallography


Distribution Statement : APPROVED FOR PUBLIC RELEASE