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Technical Report Documentation Page CA-DOT-TL-6666-1-74-18 1. REPORT No. 2. GOVERNMENT ACCESSION No. 3. RECIPIENT'S CATALOG No. Dynamic Fracture Toughness Determination By The Instrumented Charpy Impact Test 4. TITLE AND SUBTITLE June 1974 5. REPORT DATE 6. PERFORMING ORGANIZATION Smith, Roger D.; Jonas, Paul g. 7. AUTHOR(S) CA-DOT-TL-6666-1-74-18 8. PERFORMING ORGANIZATION REPORT No. Transportation Laboratory 5900 Folsom Boulevard Sacramento, California 95819 9. PERFORMING ORGANIZATION NAME AND ADDRESS 10. WORK UNIT No. 11. CONTRACT OR GRANT No. Department of Transportation Division of Highways Sacramento, California 95807 12. SPONSORING AGENCY NAME AND ADDRESS Final 13. TYPE OF REPORT & PERIOD COVERED 19-3121 14. SPONSORING AGENCY CODE Final report for study titled "K ID Determination from the Instrumented Precracked Charpy Impact Test". 15. SUPPLEMENTARY NOTES The fracture behavior under dynamic load rates of seven heats of ASTM A514/517 steel (Grades H and F) is investigated. Material properties including dynamic yield strength and dynamic fracture toughness are determined using the instrumented Charpy impact test. These dynamic properties are contrasted with previously determined static propertiers for the same steel heats. Also discussed is the determination of nil ductility transition temperature (NDTT) and the analysis of the different cracking energy components (initiation and propagation) from Charpy impact tests. Alleged correlations between Charpy impact energy and dynamic fracture toughness are evaluated with respect to this study. The practicality of a fracture control program for bridge steel based on dynamic loading behavior is discussed. 16. ABSTRACT Dynamic fracture toughness, brittle fracture, steel toughness, instrumented impact test, fracture mechanics, Charpy impact test. 17. KEYWORDS 148 18. No. OF PAGES: http://www.dot.ca.gov/hq/research/researchreports/1974-1975/74-18.pdf 19. DRI WEBSITE LINK This page was created to provide searchable keywords and abstract text for older scanned research reports. November 2005, Division of Research and Innovation 74-18.pdf 20. FILE NAME

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Page 1: Technical Report Documentation Page - Caltrans · Technical Report Documentation Page ... is the determination of nil ductility transition temperature ( NDTT)

Technical Report Documentation Page

CA-DOT-TL-6666-1-74-181. REPORT No. 2. GOVERNMENT ACCESSION No. 3. RECIPIENT'S CATALOG No.

Dynamic Fracture Toughness Determination By TheInstrumented Charpy Impact Test

4. TITLE AND SUBTITLE

June 19745. REPORT DATE

6. PERFORMING ORGANIZATION

Smith, Roger D.; Jonas, Paul g.7. AUTHOR(S)

CA-DOT-TL-6666-1-74-188. PERFORMING ORGANIZATION REPORT No.

Transportation Laboratory5900 Folsom BoulevardSacramento, California 95819

9. PERFORMING ORGANIZATION NAME AND ADDRESS 10. WORK UNIT No.

11. CONTRACT OR GRANT No.

Department of TransportationDivision of HighwaysSacramento, California 95807

12. SPONSORING AGENCY NAME AND ADDRESS Final13. TYPE OF REPORT & PERIOD COVERED

19-312114. SPONSORING AGENCY CODE

Final report for study titled "K ID Determination from the Instrumented Precracked Charpy Impact Test".15. SUPPLEMENTARY NOTES

The fracture behavior under dynamic load rates of seven heats of ASTM A514/517 steel (Grades H and F) is investigated. Materialproperties including dynamic yield strength and dynamic fracture toughness are determined using the instrumented Charpy impacttest. These dynamic properties are contrasted with previously determined static propertiers for the same steel heats. Also discussedis the determination of nil ductility transition temperature (NDTT) and the analysis of the different cracking energy components(initiation and propagation) from Charpy impact tests. Alleged correlations between Charpy impact energy and dynamic fracturetoughness are evaluated with respect to this study. The practicality of a fracture control program for bridge steel based on dynamicloading behavior is discussed.

16. ABSTRACT

Dynamic fracture toughness, brittle fracture, steel toughness, instrumented impact test, fracture mechanics, Charpy impact test.17. KEYWORDS

14818. No. OF PAGES:

http://www.dot.ca.gov/hq/research/researchreports/1974-1975/74-18.pdf19. DRI WEBSITE LINK

This page was created to provide searchable keywords and abstract text for older scanned research reports.November 2005, Division of Research and Innovation

74-18.pdf20. FILE NAME

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