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Test apparatus for measuring sound power levels of drills.

Authors
Aljoe-WW; Stein-RR; Bartholomae-RC
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, IC 9166, 1987 Jan; :1-35
NIOSHTIC No.
10005835
Abstract
This Bureau of Mines report describes in detail the design and operation of a test apparatus for measuring the sound power levels of drills used by the mining industry. The two major components of the test apparatus are a computer-controlled automated drill test fixture (ADTF) and a 45,000-ft3 reverberation chamber that houses the ADTF. Design specifications and performance capabilities of the ADTF and the reverberation room are given. Initial test results for three types of drills-a pneumatic percussion drill, a hydraulic percussion drill, and a pneumatic rotary drill-are given to illustrate the types of experiments that can be conducted with the test apparatus.
Keywords
Mining-industry; Mining-equipment; Noise-levels; Noise-sources; Power-tools; Pneumatic-tools; Coal-mining; Noise; Noise-analysis
Publication Date
19870101
Document Type
IH; Information Circular
Fiscal Year
1987
NTIS Accession No.
PB88-231915
NTIS Price
A03
Identifying No.
IC-9166
NIOSH Division
PRC
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, IC 9166
State
PA
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