Development and validation of a prototype acoustic emission system for inspection of metal NGV fuel cylinders. Topical report, May 1995

Technical Report · Mon May 01 04:00:00 EDT 1995

OSTI ID:104251

Hudak, S J; Connolly, M P; Hanley, J J; Lukezich, S J

Steel cyclinders currently provide the most common form of compressed natural gas (CNG) fuel storage in natural gas vehicles (NGVs). Although presently no federal or state regulations apply specifically to periodic recertification of NGV fuel cylinders fleet operators often use periodic hydrostatic testing to recertify cylinders according to DOT Specification 3AA. Current hydrostatic testing has both economic and technical limitations. In addition to the cost associated with having to remove cyclinders from the vehicles for testing, it has also been shown that current hydrostatic testing is not capable of detecting cracking due to corrosion fatigue-the most critical form of damage in steel NGV fuel cylinders. These economic and technical incentives motivated the present program whose goal was to provide the technical basis for an improved method of recertifying cylinders on-board vehicles.

• Research Organization: Southwest Research Inst., San Antonio, TX (United States)
• OSTI ID: 104251
• Report Number(s): PB--95-239091/XAB; SWRI--06-1566; CNN: Contract GRI-5086-252-1440
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
33 ADVANCED PROPULSION SYSTEMS
ACOUSTIC EMISSION TESTING
BENCH-SCALE EXPERIMENTS
COMPRESSED GASES
FUEL SUBSTITUTION
GAS CYLINDERS
INSPECTION
NATURAL GAS
SAFETY STANDARDS