EVALUATION OF THE STRUCTURAL NOISE SOURCES OF A FOUR-PIECE GRAVITY DROP FORGE HAMMER BY RESIDUAL SPECTRUM TECHNIQUES.

Martin Wesley Trethewey, Harold A. Evensen

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

Properly implemented residual spectrum modeling can yield useful quantitative source identification. A three-input model applied to a tightly controlled production hammer accounted for 82% of the energy radiated past the operator's position; the ram appeared to be the major contributor with the columns and anvil contributing lesser, roughly equal, amounts. However, a five-input model applied to a less strictly controlled hammer accounted for only 64% of the energy. This reduced effectiveness is attributed to poor blow control. To improve a model's effectiveness at higher frequencies, it may be feasible to improve an element's characterization by means of a linear combination of transducers distributed over its surface.

Original languageEnglish (US)
Pages (from-to)487-490
Number of pages4
JournalProceedings - International Conference on Noise Control Engineering
Volume1
StatePublished - Jan 1 1980
EventUnknown conference - Miami, FL, USA
Duration: Dec 8 1980Dec 10 1980

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hammers
gravitation
evaluation
ram
anvils
transducers
operators
energy

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

Cite this

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title = "EVALUATION OF THE STRUCTURAL NOISE SOURCES OF A FOUR-PIECE GRAVITY DROP FORGE HAMMER BY RESIDUAL SPECTRUM TECHNIQUES.",
abstract = "Properly implemented residual spectrum modeling can yield useful quantitative source identification. A three-input model applied to a tightly controlled production hammer accounted for 82{\%} of the energy radiated past the operator's position; the ram appeared to be the major contributor with the columns and anvil contributing lesser, roughly equal, amounts. However, a five-input model applied to a less strictly controlled hammer accounted for only 64{\%} of the energy. This reduced effectiveness is attributed to poor blow control. To improve a model's effectiveness at higher frequencies, it may be feasible to improve an element's characterization by means of a linear combination of transducers distributed over its surface.",
author = "Trethewey, {Martin Wesley} and Evensen, {Harold A.}",
year = "1980",
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language = "English (US)",
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AU - Trethewey, Martin Wesley

AU - Evensen, Harold A.

PY - 1980/1/1

Y1 - 1980/1/1

N2 - Properly implemented residual spectrum modeling can yield useful quantitative source identification. A three-input model applied to a tightly controlled production hammer accounted for 82% of the energy radiated past the operator's position; the ram appeared to be the major contributor with the columns and anvil contributing lesser, roughly equal, amounts. However, a five-input model applied to a less strictly controlled hammer accounted for only 64% of the energy. This reduced effectiveness is attributed to poor blow control. To improve a model's effectiveness at higher frequencies, it may be feasible to improve an element's characterization by means of a linear combination of transducers distributed over its surface.

AB - Properly implemented residual spectrum modeling can yield useful quantitative source identification. A three-input model applied to a tightly controlled production hammer accounted for 82% of the energy radiated past the operator's position; the ram appeared to be the major contributor with the columns and anvil contributing lesser, roughly equal, amounts. However, a five-input model applied to a less strictly controlled hammer accounted for only 64% of the energy. This reduced effectiveness is attributed to poor blow control. To improve a model's effectiveness at higher frequencies, it may be feasible to improve an element's characterization by means of a linear combination of transducers distributed over its surface.

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