Influence of experimental scatter on the analysis and extrapolation of stress-rupture data

Conference · Wed Jan 01 00:00:00 EST 1986

OSTI ID:5815888

Booker, M K

A great deal of research has been performed in the area of analysis and extrapolation of stress rupture data for more than three decades. Most of this work has concentrated on development of clever model forms for describing behavior in a simple mathematical way. However, little direct consideration has been given to the importance of inherent data scatter for such analyses. This paper presents a direct discussion of that topic, including an illustration of the impact of data scatter for several computer simulated data sets for which ''true'' behavior and the ''true'' amount of scatter are known by definition. The results clearly indicate that less attention should be paid to development of clever model forms for fitting data, and more should be paid to the use of sound, valid statistical techniques for the fitting of whatever models are used.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5815888
• Report Number(s): CONF-860722-10; CONF-860727-3; ON: DE86009510
• Resource Relation: Conference: ASME pressure vessel and piping conference and exhibit, Chicago, IL, USA, 20 Jul 1986; 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
MECHANICAL TESTS
DATA ANALYSIS
STAINLESS STEEL-304
MECHANICAL PROPERTIES
MATHEMATICAL MODELS
RUPTURES
STRESSES
ALLOYS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
FAILURES
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MATERIALS TESTING
NICKEL ALLOYS
STAINLESS STEELS
STEELS
TESTING
420500* - Engineering- Materials Testing
360103 - Metals & Alloys- Mechanical Properties