Accession Number:

AD0744211

Title:

Utilization of Temperature Sensitive Liquid Crystals for Thermal Analysis and an Application to Transducer Investigations.

Descriptive Note:

Research rept.,

Corporate Author:

NAVAL UNDERWATER SYSTEMS CENTER NEWPORT R I

Personal Author(s):

• Maple,Roger D.

Report Date:

1972-05-30

Pagination or Media Count:

38.0

Abstract:

Cholesteric liquid crystals, because they exhibit predictable temperature-dependent color changes, are a valuable indicator for qualitative and quantitative thermal analysis, particularly the observation of varying thermal phenomena over continuous surfaces. The report describes the properties of liquid crystals, applications, and a demonstrative experiment in which liquid crystals were used to observe transient and equilibrium thermal patterns of ANSQS-26 transducers. Author

Descriptors:

• (*TRANSDUCERS
• THERMAL ANALYSIS)
• (*SONAR EQUIPMENT
• *NONDESTRUCTIVE TESTING)
• TEST EQUIPMENT
• TEST METHODS
• TEMPERATURE SENSITIVE ELEMENTS
• CRYSTALS
• LIQUIDS

Subject Categories:

• Test Facilities, Equipment and Methods
• Acoustic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE