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Title:

Laboratory Method for Inertial Profiler Verification

Accession Number:

01152449

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

Past studies have shown that most of the inertial profilers verification procedures are conducted through repeated profile measurements on test sections with known profiles. The evaluation takes account of errors from the profiler equipment (accelerometers, laser distance sensors, and displacement measuring sensors), analytical software (signal processing and IRI computations), and operator¡¦s variables (tracking footprint and moving speed). In this study, a new method is presented to set aside the error factor of operator variables and concentrate only on errors of profiler instrumentation and analysis software. An experimental design was conducted at the Fatigue and Durability Test Laboratory of the Automotive Research and Testing Center (ARTC). Using a servo-hydraulic loading tester with indiscriminate sinusoidal vertical displacement frequencies and amplitude levels, the facility simulates several levels of roughness for different pavement test sections. This apparatus compiled sinusoidal vertical displacements of various frequencies and amplitude levels to generate the verification procedure. The mixed composition of sinusoidal waves can very closely simulate an actual pavement profile. Through the developed evaluation method, errors attributed to operator variables can be excluded, and errors induced by profiler and software can be further identified. This test procedure not only allows the comparison of calculated IRI values, but also provides a solid comparison of measured profile and the fed sinusoidal data point by point.

Monograph Accession #:

01147878

Report/Paper Numbers:

10-1944

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Lee, Mei-Hui
Chou, Chia-Pei J

Pagination:

21p

Publication Date:

2010

Conference:

Transportation Research Board 89th Annual Meeting

Location: Washington DC, United States
Date: 2010-1-10 to 2010-1-14
Sponsors: Transportation Research Board

Media Type:

DVD

Features:

Figures; Photos; References (28) ; Tables (4)

Identifier Terms:

International Roughness Index

Uncontrolled Terms:

Inertial profilers

Subject Areas:

Highways; Maintenance and Preservation; Pavements; I61: Equipment and Maintenance Methods

Source Data:

Transportation Research Board Annual Meeting 2010 Paper #10-1944

Files:

TRIS, TRB

Created Date:

Jan 25 2010 10:53AM