APPARATUS FOR THE DETERMINATION OF DYNAMIC YOUNG'S MODULUS AND INTERNAL FRICTION IN VACUUM AT TEMPERATURES FROM 25 C TO 1200 C,
Abstract
The determination of dynamic Young's modulus and internal friction utilizing transverse free-free vibration in vacuum at temperatures from 25 to 1200 C is described. High temperatures are achieved with a highly efficient elliptical radiation furnace whose design and construction are described in detail. The two wires used for driving and sensing are also the two legs of a thermocouple circuit which are attached to opposite ends of metallic specimens; the specimen itself completes the thermocouple circuit. The electronic components which allow determination of both decay time and resonant frequency using a frequency counter are presented along with a description of the method of operation. The accuracy of the measurements is discussed and typical experimental results for an Fe-Si and Fe-Al alloy, as well as for nickel, are presented. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 15, 1963
- Accession Number
- AD0421952
Entities
People
- Jack L. Lytton
- John A. Hren
- Kenneth T. Kamber
- Oleg D. Sherby
Organizations
- Stanford University