Accession Number:

ADA191219

Title:

Stress Intensity Factors for Cracked Metallic Structures Under Rapid Thermal Loading

Descriptive Note:

Final rept. Aug 86-May 87,

Corporate Author:

APTECH ENGINEERING SERVICES INC SUNNYVALE CA

Personal Author(s):

• Cipolla, Russell C.
• Clark, Kimble J.

Report Date:

1987-10-01

Pagination or Media Count:

74.0

Abstract:

High intensity heating of aircraft structures can challenge the structural integrity of critical aircraft components, especially when they may contain flaws. The evaluation of flawed components requires the application of fracture mechanics wherein crack tip stress intensity factors are used to provide a quantitative means of assessing structural integrity. The primary objectives of this project were to develop an analysis method for computing stress intensity factors for severe thermal loadings of interest to the Air Force and to demonstrate the applicability of the method to small microcomputers. Keywords Stress intensity factors, Fracture mechanics, Rapid thermal pulses, Crack growth, Analysis.

Descriptors:

• *CRACKING(FRACTURING)
• *FRACTURE(MECHANICS)
• *AIRFRAMES
• *THERMAL STRESSES
• AIRCRAFT
• STRUCTURAL PROPERTIES
• CRACKS
• STRUCTURES
• INTENSITY
• RELIABILITY
• CRACK PROPAGATION
• PULSES
• HEATING
• AERODYNAMIC LOADING
• MICROCOMPUTERS
• AERODYNAMIC HEATING
• HIGH RATE
• AIR FORCE
• METALS
• STRESSES
• THERMAL PROPERTIES

Subject Categories:

• Aircraft
• Structural Engineering and Building Technology
• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE