NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Qualification of Bonding Process of Temperature Sensors to Extreme Temperature Deep Space MissionsA process has been explored based on the state-of-the-art technology to bond the platinum resistance thermometer (PRT) on to potential aerospace material such as a flat aluminum surface and a flexible copper tube to simulate coaxial cable for the flight applications. Primarily, PRTs were inserted into a metal plated copper braid to avoid stresses on the sensor while attaching the sensor with braid to the base material for long duration deep space missions. Appropriate pretreatment has been implemented in this study to enhance the adhesion of the PRTs to the base material. NuSil product has been chosen in this research to attach PRT to the base materials. The resistance (approx.1.1 k(Omega)) of PRTs has been electrically monitored continuously during the qualification thermal cycling testing from -150 C to +120 C and -100 C to -35 C. The test hardware has been thermal cycled three times the mission life per JPL design principles for JUNO project. No PRT failures were observed during and after the PRT thermal cycling qualification test for extreme temperature environments. However, there were some failures associated with staking of the PRT pig tails as a result of thermal cycling qualification test.
Document ID
20150005803
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
External Source(s)
Authors
Ramesham, Rajeshuni
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Kitiyakara, Amarit
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Redick, Richard
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Sunada, Eric T.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
April 17, 2015
Publication Date
January 24, 2011
Subject Category
Instrumentation And Photography
Meeting Information
Meeting: Small Body Assessment Group Meeting
Location: Washington, D.C.
Country: United States
Start Date: January 24, 2011
Sponsors: Jet Propulsion Lab., California Inst. of Tech.
Distribution Limits
Public
Copyright
Other
Keywords
Extreme temperatures
bonding materials
platinum resistance thermometer (PRT) reliability
bonding process qualification
staking
installation failures
platinum resistance thermometer (PRT) failures

Available Downloads

There are no available downloads for this record.
No Preview Available