Hydrogen Embrittlement Failure in Suspension Leaf Springs 2007-01-4257
Multileaf steel suspension springs are occasionally prone to failure through delayed hydrogen stress cracking, a brittle fracture that can occur even before the springs have been assembled into a vehicle. This failure mode is unusual, and problematic in respect of diagnosis and prevention. Jai Parabolic Springs Ltd (JPSL), the world's fourth largest leaf spring manufacturer, experienced early failures of this kind in springs produced for a truck vehicle program in 2005. The root cause was shown to be delayed hydrogen stress cracking, or hydrogen embrittlement. Tests were conducted to assess the conditions leading to this type of failure. Guidelines are presented that were developed, and proved in production, to prevent future recurrence.
Citation: Laroiya, S., Sharma, A., de Salis, R., and Holly, M., "Hydrogen Embrittlement Failure in Suspension Leaf Springs," SAE Technical Paper 2007-01-4257, 2007, https://doi.org/10.4271/2007-01-4257. Download Citation
Author(s):
Sunil Laroiya, Anuj Sharma, Rupert de Salis, Mike Holly
Affiliated:
Jai Parabolic Springs Ltd., International Engineering Support Ltd., General Motors North America
Pages: 7
Event:
SAE 2007 Commercial Vehicle Engineering Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Commercial Vehicle Chassis & Suspension Systems and Effect of Tire, Suspension & Chassis Failure on Vehicle Dynamics and Control-SP-2146
