GLASS-HOLDER RELIABILITY STUDY.
Abstract
A one-year reliability study on glass crystal holders HC-26/U, HC-27/U, and HC-30/U was conducted. Sealed holders were examined for cracks, subjected to thermal shock, and checked for vacuum retention at monthly intervals. Yield figures and findings from the monthly tests are presented by holder type, by supplier, and by mode of failure. Reliability curves are also presented, showing the failure rates in percent per thousand hours by holder type and supplier. HC-30's maintained a 0% failure rate throughout, HC-27's averaged about 5% loss per thousand hours at the beginning but reached less than 1% loss by the end, while HC-26's ranged between 3% and 4% loss per thousand hours throughout the one-year study. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 1964
- Accession Number
- AD0453456
Entities
People
- J. M. Wolfskill
- Robert Mouck