USA flag logo/image

An Official Website of the United States Government

Advanced Rail Tension Monitor (RTM) for In-Place Stress Measurement and Analysis

Award Information

Department of Defense
Air Force
Award ID:
Program Year/Program:
1998 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
International Electronic Machines
850 River St. Troy, NY 12180-1239
View profile »
Woman-Owned: No
Minority-Owned: Yes
HUBZone-Owned: No
Phase 2
Fiscal Year: 1998
Title: Advanced Rail Tension Monitor (RTM) for In-Place Stress Measurement and Analysis
Agency / Branch: DOD / USAF
Contract: N/A
Award Amount: $728,241.00


Maintaining straightness of continuously welded high speed DoD track rails is critical to the facility's mission, since test vehicles, often traversing the track at up to Mach 10, can experience dangerous dynamic loading due to track irregularities. Although facilities are constructed with adequate pretension to reduce undesirable effects of irregularities and thermal expansion/contraction over wide temerature ranges, tracks breads often preclude the maintenanct of pretension. An advanced sensing system to monitor rail stress, and software tools to provide supporting analytical capability would be highly beneficial In the U.S. transportation sector, a similar requirement exists to monitor rail tension in welded rails. Increasing traffic, speed, and rail loads make the requirement increasingly important. An advanced analysis and test program for this applicaiton is proposed for side-by-side testing of the two most advanced technologies for non-destructive rail monitoring: electro magnetic acoustic transduction (EMAT) and non-linear harmonic (NLH) magnetic hysteresis. The project will experimentally compare the technologies against the requirements of a DoD test track, determine the best approach, develop a conceptual system design, and fabricate the test prototype hardware. Supporting tools to analyze rail stress response to temperature will also be developed in working prototype form.

Principal Investigator:

Zack Mian

Business Contact:

Small Business Information at Submission:

International Electronic
60 Fourth Ave Albany, NY 12202

Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No