Accession Number : AD0785502

Title :   Use of Cholesteric Liquid Crystals for Locating Voids in Adhesively Bonded Helicopter Rotor Blades.

Descriptive Note : Final rept.,

Corporate Author : ARMY MATERIEL COMMAND TEXARKANA TEX INTERN TRAINING CENTER

Personal Author(s) : Best,Larry V.

Report Date : MAR 1974

Pagination or Media Count : 52

Abstract : This paper researches the feasibility for using cholesteric liquid crystals for locating the unbonded areas or voids in adhesively bonded helicopter rotor blades. Results of testing two tail rotors are presented and analyzed. A general review of other nondestructive testing methods for rotor blades and a review of liquid crystals is also included. (Author)

Descriptors :   *Liquid crystals, *Rotor blades, *Defects(Materials), Test methods, Cholesterol, Nondestructive testing, Helicopters

Subject Categories : Helicopters
      Metallurgy and Metallography
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE