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Concrete vibrator

The Problem

A new concrete mould vibrator had been designed for the automated manufacture of a new building product. The new machine was due to be installed on the production lines of each of several factories. During prototype testing, it was realised that the noise generated was close to 100dB.

The Solution

The Results

The result was a noise reduction of 15dB. The graph shows the effect of the modifications on the frequency content of the noise. The machine efficiency was increased as the greater control over the product vibration allowed the cycle time to be reduced significantly. There were also additional maintenance benefits in that the likelihood of fatigue cracking and fractures was considerably reduced.

Concrete vibrator noise reduction graph

Concrete vibrator noise reduction graph

The Costs

The cost of implementing the recommended modifications on the production machines was negligible.

Information supplied by

Redland Roof Tiles Ltd. & Industrial Noise and Vibration Centre Ltd.

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Activity

Noise control technique

Industry

Updated 2010-03-02