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Sensors & Electronics

Macro Property Measurement

Nondestructive Evaluation of Yield Strength (326)

Problem: Need nondestructive means to determine yield strength of in-service gas transmission pipe

Project Activity Scope (from Technical Overview Chart): Measurement and Analysis Method Development through Integrated Systems

PNNL Solution:

• Used statistical analysis to determine relationship between hardness and yield strength
• Obtained industry test data to develop a database
• Validated procedure
• Provided client with simplified sampling tables and written test methodology

Capabilities Employed to Meet Client Needs: Interdisciplinary team building, metallurgical engineering, mechanical testing and statistical data analysis. Interpreted results for client with simplified statistical tables. Provided client with a written petition to DOT for changes to CFR 192.

Selected Links to Related Information:

• Related Examples (Same Project)
  • Metal Forming Process Optimization (413)
• Similar Application Examples (Same or Different Technology)
  • Acoustic Detection of Damage & Tampering (327)
  • Specialized Test Method Development (324)
  • Ultrasonic Case Depth Hardness Method (102)
  • Validation Testing of In-situ Pipe Repairs (325)
• Similar Technology Examples (Same or Different Application)
  • Evaluating Metal Heat Treatment Efficacy (368)
  • Evaluation of Formed Metal Test Pieces (414)
  • Ultrasonic Case Depth Hardness Method (102)
  • Ultrasonic Fingerprints of Materials (103)
  • Ultrasonic Interactions with Solid Materials (416)
  • Ultrasonic Nondestructive Evaluation (224)
• Related Websites
  • PNNL Nondestructive Evaluation Capabilities

Contact: Leonard Bond

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