HUSHCORE™ Acoustical
Products & Systems



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Introduction
 
Before exploring various aspects of designing original equipment for quiet operation, the OEM Design/Product development engineer should   review the technical discussion sections covering product types on pages 16 to 18 and treatment strategies on pages 19 and 20.
 

Before Selecting Acoustical Materials:
  • Identify noise source components and where possible determine the relative overall dB levels and frequency distribution.

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  • Relocate or remove noisy components away from operator areas.

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  • In air flow systems utilize proper aerodynamic principles to minimize noise generated by turbulence.

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  • Reduce operating speeds of rotating components.

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  • Alter operating speeds to avoid coincidence with equipment resonant frequencies.

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  • Isolate and decouple rotating components from the supporting structure.

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  • Utilize flexible connections on all equipment intakes, exhaust lines, electrical conduit and other service or utility lines.
 
  • Where practical, manufacture OEM component parts where impingement or impact takes place out of plastics or other non-metallic materials with better inherent damping qualities. Examples include gears, rollers, stops and guides.

  • Minimize the use of thin gauge sheet metal for large surface area equipment panels and as necessary use stiffeners and bracing to limit structural resonance that generates airborne noise.

  • Minimize the percentage of open area in panels designed to contain noise.

  • Utilize closed cell gasketing and seals around doors and removable panel sections.

  • Reduce drop heights on parts or material impacting hoppers, chutes and parts bins.

  • Where practical, utilize expanded metal instead of sheet metal for belt guards.
Noise and Vibration Control, Inc.
1-610-863-6300

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