Assessment of strength limiting flaws in ceramic heat exchanger components: Phase 2 midcontract summary report, December 4, 1986-November 30, 1987

Technical Report · Tue Dec 01 00:00:00 EST 1987

OSTI ID:6841717

Bower, J R

Advanced ceramic materials are attractive for use in environments that are too hostile for metals. Unfortunately, acceptance of ceramics in these applications has been limited because ceramics are subject to sudden failure by brittle fracture. The goal of this program is to produce acceptance criteria and appropriate verification tests for one specific component: ceramic heat exchanger tubes. The program has three major parts; NonDestructive Examination (NDE), Linear Elastic Fracture Mechanics (LEFM), and Destructive Testing (DT). Because ceramics are subject to brittle fracture, the assessment of materials for conditions that could lead to failure is vital. This is the task of NDE. Acceptance criteria must be based on a model that can predict tube lifetime, given operating conditions, material characteristics, and possible flaws present. This is the task of LEFM. NDE examination results need to be compared to failure test results, and LEFM requires test data to create and verify the fracture model. This is the task of DT.

• Research Organization: Babcock and Wilcox Co., Lynchburg, VA (USA). Research and Development Div.
• DOE Contract Number: AC07-84ID12566
• OSTI ID: 6841717
• Report Number(s): DOE/ID/12566-2; ON: DE88013691
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
36 MATERIALS SCIENCE
CERAMICS
FRACTURE MECHANICS
NONDESTRUCTIVE TESTING
HEAT EXCHANGERS
MATERIALS
MECHANICAL PROPERTIES
ACOUSTIC EMISSION TESTING
ACOUSTIC MICROSCOPY
COMPUTERIZED TOMOGRAPHY
DEFECTS
INDUSTRIAL RADIOGRAPHY
LIQUID PENETRANT INSPECTION
PROGRESS REPORT
TUBES
ULTRASONIC TESTING
ACOUSTIC TESTING
DIAGNOSTIC TECHNIQUES
DOCUMENT TYPES
MATERIALS TESTING
MECHANICS
MICROSCOPY
TESTING
TOMOGRAPHY
420400* - Engineering- Heat Transfer & Fluid Flow
360203 - Ceramics
Cermets
& Refractories- Mechanical Properties