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 04:00:00 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
• Country of Publication: United States
• Language: English

Related Subjects

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