columbus · Acousto-Elastic Fastener Preload Indicator

Acousto-Elastic Fastener Preload Indicator

Title: Acousto-Elastic Fastener Preload Indicator
Date: 1978
Index Abstract: Not Available
Photo Quality: Undetermined
Report Number: AFML TR 78-138
Creator: Couchman, J. C.
Corporate Author: General Dynamics
Laboratory: Aeronautical Systems Division
Date Issued: 1978-10
Extent: 101
Identifier: ADB038409
Access Rights: Distribution limited to U.S. Government agencies only; test and
evaluation; May 1978.
Distribution Classification: 1
Contract: F33615-76-C-5251
DoD Project: None Given
DoD Task: None Given
DTIC Record Exists: Yes
Distribution Change Authority Correspondence: AFWAL LTR
Distribution Conflict: No
Abstract: This report describes the assembly, calibration, and testing of an acousto-elastic fastener preload indicator that has been demonstrated to preload fasteners with better than 5% accuracy within the elastic range. The system is computer automated and includes a calibration procedure for checking cutoff accuracy. The new capability afforded by this computer-controlled acousto- elastic torque wrench improves state-of-the-art capabilities by nearly an order of magnitude in accuracy for setting preloads and can be used on flaw-free fasteners of the flat-head type.
Report Availability: Not available via Contrails
Index In: DTIC
Type: report