Instrumented Impact Testing: Influence of Machine Variables and Specimen Position

Research output: Report/bookBLG - Open reportpeer-review

Standard

Instrumented Impact Testing: Influence of Machine Variables and Specimen Position. / Lucon, Enrico; McCowan, Chris N.; Santoyo, Raymond A.; Scibetta, Marc (Peer reviewer).

0 ed. SCK CEN, 2008. 45 p. (SCK•CEN Reports; No. BLG-1058).

Research output: Report/bookBLG - Open reportpeer-review

Harvard

Lucon, E, McCowan, CN, Santoyo, RA & Scibetta, M 2008, Instrumented Impact Testing: Influence of Machine Variables and Specimen Position. SCK•CEN Reports, no. BLG-1058, 0 edn, SCK CEN.

APA

Lucon, E., McCowan, C. N., Santoyo, R. A., & Scibetta, M. (2008). Instrumented Impact Testing: Influence of Machine Variables and Specimen Position. (0 ed.) (SCK•CEN Reports; No. BLG-1058). SCK CEN.

Vancouver

Lucon E, McCowan CN, Santoyo RA, Scibetta M. Instrumented Impact Testing: Influence of Machine Variables and Specimen Position. 0 ed. SCK CEN, 2008. 45 p. (SCK•CEN Reports; BLG-1058).

Author

Lucon, Enrico ; McCowan, Chris N. ; Santoyo, Raymond A. ; Scibetta, Marc. / Instrumented Impact Testing: Influence of Machine Variables and Specimen Position. 0 ed. SCK CEN, 2008. 45 p. (SCK•CEN Reports; BLG-1058).

Bibtex - Download

@book{8f123309bbae43918eddcdf2b325bca4,
title = "Instrumented Impact Testing: Influence of Machine Variables and Specimen Position",
abstract = "An investigation has been conducted on the influence of impact machine variables and specimen positioning on characteristic forces and absorbed energies from instrumented Charpy tests. Brittle and ductile fracture behavior has been investigated by testing NIST reference samples of low, high and super-high energy levels. Test machine variables included tightness of foundation, anvil and striker bolts, and the position of the center of percussion with respect to the center of strike. For specimen positioning, we tested samples which had been moved away or sideways with respect to the anvils. In order to assess the influence of the various factors, we compared mean values in the reference ({"}unaltered{"}) and {"}altered{"} conditions; for machine variables, t-test analyses were also performed in order to evaluate the statistical significance of the observed differences. Our results indicate that the only circumstance which resulted in variations larger than 5% for both brittle and ductile specimens is when the sample is not in contact with the anvils. These findings should be taken into account in future revisions of instrumented Charpy test standards.",
keywords = "Instrumented Charpy tests, impact machine variables, specimen positioning, t-test analysis",
author = "Enrico Lucon and McCowan, {Chris N.} and Santoyo, {Raymond A.} and Marc Scibetta",
note = "RN - BLG-1058 AI - This work was performed during my secondment at NIST (National Institute of Standards and Technology) in Boulder, Colorado (USA), between June and August 2008. An abridged version of this report was submitted to Journal of Testing and Evaluation for publication on 25 August 2008. The report is also published as a NIST Internal Report (NISTIR). Score = 2",
year = "2008",
month = sep,
language = "English",
series = "SCK•CEN Reports",
publisher = "SCK CEN",
number = "BLG-1058",
address = "Belgium",
edition = "0",

}

RIS - Download

TY - BOOK

T1 - Instrumented Impact Testing: Influence of Machine Variables and Specimen Position

AU - Lucon, Enrico

AU - McCowan, Chris N.

AU - Santoyo, Raymond A.

A2 - Scibetta, Marc

N1 - RN - BLG-1058 AI - This work was performed during my secondment at NIST (National Institute of Standards and Technology) in Boulder, Colorado (USA), between June and August 2008. An abridged version of this report was submitted to Journal of Testing and Evaluation for publication on 25 August 2008. The report is also published as a NIST Internal Report (NISTIR). Score = 2

PY - 2008/9

Y1 - 2008/9

N2 - An investigation has been conducted on the influence of impact machine variables and specimen positioning on characteristic forces and absorbed energies from instrumented Charpy tests. Brittle and ductile fracture behavior has been investigated by testing NIST reference samples of low, high and super-high energy levels. Test machine variables included tightness of foundation, anvil and striker bolts, and the position of the center of percussion with respect to the center of strike. For specimen positioning, we tested samples which had been moved away or sideways with respect to the anvils. In order to assess the influence of the various factors, we compared mean values in the reference ("unaltered") and "altered" conditions; for machine variables, t-test analyses were also performed in order to evaluate the statistical significance of the observed differences. Our results indicate that the only circumstance which resulted in variations larger than 5% for both brittle and ductile specimens is when the sample is not in contact with the anvils. These findings should be taken into account in future revisions of instrumented Charpy test standards.

AB - An investigation has been conducted on the influence of impact machine variables and specimen positioning on characteristic forces and absorbed energies from instrumented Charpy tests. Brittle and ductile fracture behavior has been investigated by testing NIST reference samples of low, high and super-high energy levels. Test machine variables included tightness of foundation, anvil and striker bolts, and the position of the center of percussion with respect to the center of strike. For specimen positioning, we tested samples which had been moved away or sideways with respect to the anvils. In order to assess the influence of the various factors, we compared mean values in the reference ("unaltered") and "altered" conditions; for machine variables, t-test analyses were also performed in order to evaluate the statistical significance of the observed differences. Our results indicate that the only circumstance which resulted in variations larger than 5% for both brittle and ductile specimens is when the sample is not in contact with the anvils. These findings should be taken into account in future revisions of instrumented Charpy test standards.

KW - Instrumented Charpy tests

KW - impact machine variables

KW - specimen positioning

KW - t-test analysis

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/ezp_90650

UR - http://knowledgecentre.sckcen.be/so2/bibref/5090

M3 - BLG - Open report

T3 - SCK•CEN Reports

BT - Instrumented Impact Testing: Influence of Machine Variables and Specimen Position

PB - SCK CEN

ER -

ID: 269498