Accession Number:

AD0752317

Title:

Damping in Porcelain Enamel Coatings.

Descriptive Note:

Summary technical rept. Jun 69-Jun 71,

Corporate Author:

MINNESOTA UNIV MINNEAPOLIS DEPT OF AERONAUTICS AND ENGINEERING MECHANICS

Personal Author(s):

• Sridharan,Prabha
• Plunkett,Robert

Report Date:

1972-07-01

Pagination or Media Count:

79.0

Abstract:

Porcelain enamels are extensively used as protective and decorative coatings for metal parts. This report describes a study of the damping capability of these coatings at elevated temperatures. A maximum loss coefficient of .04 was observed for a bending specimen of mean thickness 0.09 inches, with a .0055 inch thick porcelain enamel coating. Experimental data showing the dependence of damping on temperature, coating thickness and frequency is presented. A method for determining the complex elastic modulus of the coating material is discussed. Results from bending and torsion experiments are compared. Author

Descriptors:

• (*CERAMIC COATINGS
• DAMPING)
• (*PROTECTIVE TREATMENTS
• THERMAL PROPERTIES)
• VIBRATION
• RHEOLOGY
• MODULUS OF ELASTICITY
• RESONANT FREQUENCY
• STRESSES
• THERMAL ANALYSIS
• NUMERICAL ANALYSIS

Subject Categories:

• Coatings, Colorants and Finishes

Distribution Statement:

APPROVED FOR PUBLIC RELEASE