Testing Overview and Proof- Test of NASA’s X-34 Dr. Larry Peel Texas A & M - Kingsville MEEN 4363/4 special thanks to Gary Harris of Orbital Science Corp.
Jan 02, 2016
Testing Overview and Proof-Test of NASA’s X-34
Dr. Larry Peel
Texas A & M - Kingsville
MEEN 4363/4
special thanks to Gary Harris of Orbital Science Corp.
Presentation Outline
When is testing Needed? Materials Testing Component Testing Proof Testing In-service Testing
What is Needed for Testing?
Completed Components A verified TEST PLAN A notebook to TAKE NOTES. Record everything. Test equipment, training, jigs & fixtures Rough calculations to predict response of system. Time… do a test, correlate the data, then take more
tests…. Can’t rush testing. Allow for failure of specimens.
Testing Standards - ASTM
Rebar - ASTM A615 and ASTM A996 standards
ASTM D 6415 test fixture and test specimen. Source: Dr. Don Adams
Testing in our lab
Simple weld / tensile tests up to 17,000 lbs were performed in our lab today. Notice chips out of fixture.
Materials Testing Elastomers
5 silicone
5 urethane
Fibers
Dry cotton Rubber-impregnated cotton
Fiberglass not tested
Fiber-Reinforced Elastomer Coupons
4 specimens each at 0, 15, 30, 45, 60, 75, 90°
Silicone/cotton, Silicone/fiberglass,
Urethane/cotton, Urethane/fiberglass.
Rocket Propellant Tank Design
RP tank is in front, has 2 internal domes to create 3 compartments, made totally from graphite/epoxy using lower-cost fabrication methods
RP Tank Testing
Proof pressure test to 125 psi, Cycle 400 times at 100 psi…pinhole leaks, end deflection, action of internal domes