Ultrasonic Monitoring of Initial Fatigue Crack Propagation,
Abstract
Defects of up-to-date machinery are most frequently due to material fatigue. The paper contains the author's recent test results, according to which ultrasonic signals, produced by reference to standards, were successfully applied to assessing the degree of fatigue cracking caused by repeated loads. Mathematical relationships were determined between the surface crack referred to by the defect signal, the crack propagation rate, and the increase in the amplitude. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 04, 1968
- Accession Number
- AD0849953
Entities
People
- P. Reti
Organizations
- National Air and Space Intelligence Center