Methods for Non-Destructive Analysis of Fatigue in Cranes

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N/A
Agency Tracking Number: 28598
Amount: $69,994.00
Phase: Phase I
Program: SBIR
Awards Year: 1995
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Texas Research Institute
9063 Bee Caves Road, Austin, TX, 78733
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Gary W. Carriveau
 (512) 263-2101
Business Contact
Phone: () -
Research Institution
Sudden, catastrophic fatigue failures in 40 to 50 year old Navy cranes pose a significant danger to personnel and facilities. These aging cranes are currently used to lift nuclear materials and other sensitive payloads. Nondestructive Evaluation (NDE) methods of fatigue crack analysis are urgently needed, before more cranes experience failures leading to the uncontrolled dropping of the load. In the proposed effort, TRI/Austin will investigate the background of the problem by visiting crane sites and examining the equipment. A worldwide information search will be conducted, focusing on NDE technique for determining crack size, orientation, and location, and NDE techniques for in-situ material toughness evaluation. Special emphasis will be placed on Acoustic Emission (AE) and ultrasonic techniques, which will be investigated both in the literature and in the laboratory. A technology synthesis will be performed to select NDE methods applicable to the crane problem. Prototype laboratory tools will be developed and tested to prove the feasibility of the approach. A final comprehensive report will be prepared and delivered at the end of the ef fort. TRI/Austin will team with Dr. Tim Fowler, who is recognized worldwide as an expert in Acoustic Emission NDE.

* information listed above is at the time of submission.

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