Electromagnetic Inspection of Wire Ropes Using Sensor Arrays.
Abstract
The Program Objective was to develop a technique and apparatus for a reliable inspection of wire ropes in service. In particular, the objective was to develop advanced methods and apparatus for an accurate quantitative in-service identification and characterization of wire rope defects using electromagnetic NDE methods. A line of electromagnetic instruments was developed. These instruments can reliably test wire ropes in service, and they can remedy the shortcomings of previous wire rope inspection methods. The new instruments allow a quantitative determination of loss of metallic cross-sectional area (LMA) caused by localized flaws (e.g., broken wires) and by distributed flaws (e.g., corrosion or abrasion) with a quantitative resolution of 50 mm. (Here, quantitative resolution is defined as the required minimum flaw length for which the sensor provides a quantitative measure of LMA directly, without additional signal processing. The qualitative identification of flaws shorter than 50 mm is possible without further signal processing.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 20, 1985
- Accession Number
- ADA165681
Entities
People
- Herbert R. Weischedel