PRODUCTION ENGINEERING MEASURE FOR TYPE CR-(XM-60)/U CRYSTAL UNITS.

Abstract

The new Kold-Weld holders were utilized in a 20 unit crystal group now under test. Evaluations will be made at the end of the test. Thermo-compression bonding had been abandoned early in the program in favor of ultrasonic welding. Efforts, however, will be resumed if ultrasonic welding does not prove practical. The re-evaluation of the reliability data uncovered some serious questions concerning the drive levels of the units under test. The CR-(XM-60)/U units to be manufactured are expected to have much lower resistance values than the present CR-47A/U units, because of process improvements including primarily, the evacuation of the Kold-Weld holders. Under these conditions, the drive levels may very well be in excess of five times the specification, a factor contributing to an increased aging rate, and perhaps, a poorer reliability rate than that of the CR-47A/U units. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1965
Accession Number
AD0633688

Entities

People

  • G. A. Lagasse

Tags

DTIC Thesaurus Topics

  • Bonding
  • Compression
  • Engineering
  • Evacuation
  • Joining
  • Production
  • Production Engineering
  • Production Management Methods
  • Productivity
  • Reliability
  • Resistance
  • Test And Evaluation
  • Ultrasonic Welding
  • Welding
  • Welds

Readers

  • Software Engineering
  • Thermal Physics or Thermal Science.