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1 Dec 1988

Other Reports

Ultrasonice Railroad Wheel Inspection Using EMATs

Author
Raymond E. Schramm, A. Van Clark Jr.

Subject Rail and Infrastructure Integrity

Keywords: Nondestructive Evaluation, Residual Stress, Roll-By Inspection

Abstract: This is report number 18 in a series covering the research performed by the National Institute of Standards and Technology (formerly National Bureau of Standards) for the Federal...

Report Number
NISTIR 88-3906
Office
RRD

1 Feb 1988

Other Reports

Infrared Measurements of Heating and Cooling Emissions at a Crack Tip During Tensile and Cyclic Loading

Author
Y. Huang, G. E. Hicho, R. J. Fields

Subject Rail and Infrastructure Integrity

Keywords: Aluminum, Steel, Stress Concentration, Thermoelastic Effects

Abstract: A new thermographic method based on the measurement of infrared (IR) emission from the surface of a loaded body was used to study the cooling and heating in aluminum and steel...

Report Number
FRA/ORD-88/11
Office
RRD

1 Nov 1987

Technical Reports

Determinations of Dynamic Fracture Toughness Properties of Rail Steels

Author
M. F. Kanninen, R. J. Dexter, J. W. Cardinal

Subject Rail and Infrastructure Integrity

Keywords: Fracture Mechanics, Residual Stress, Finite Element Analysis, Crack Arrest, Full-Section Impact Test, Beam-on-Elastic Foundational Model

Abstract: Motivated by the occurrence of a long-running rail web fracture in service, dynamic fracture mechanics research was undertaken to (1) quantify the crack driving force due to the...

Report Number
DOT/FRA/ORD-87/08

1 May 1986

Technical Reports

Ultrasonic Inspection of Railroad Rails by Electromagnetic Acoustic Transducers (EMATs)

Author
Lloyd J. Graham, Jim F. Martin

Subject Rail and Infrastructure Integrity

Keywords: Defects, Laboratory Testing, Nondestructive Inspection, Field Testing, Shear-Horizontal Waves, Shear-Radial Waves

Abstract: EMATs offer unique characteristics that appear to be advantageous for inspection of railroad rails. These characteristics include the features that EMATs do not require a liquid...

Report Number
FRA/ORD-86/09

1 Mar 1986

Technical Reports

Effects of Rail Profile Variation

Author
G. W. Walker

Subject Rail and Infrastructure Integrity

Keywords: Heumann Wheel Profile, Rail Corrugation, Rail Grinding, Rail Wear, Rail Wheel Radius

Abstract: Railroads in various countries including the United States have found that benefits may be obtained by grinding rails to an 'asymmetric' profile rather than to the original 'new'...

Report Number
DOT/FRA/ORD-86/04
Office
RDI-20