Strategies for Vibration, Shock, and Audible Noise Reduction

Vibration, shock, and audible noise issues impact various aspects of day-to-day living environments, including automobiles, industrial machinery, office equipment, home appliances, and more.

 

In the past, efforts have primarily focused on applying countermeasures reactively.
However, with advancements in precision, performance, and quality driven by computerization and digitalization, more proactive approaches are being adopted.
This technology has recently gained greater importance, so vibration, shock, and audible noise reduction are now integrated from the design stage, leading to the development of quieter and more robust products.

 

Since the 1990s, Kitagawa Industries has been developing its own high-performance materials and products by performing measurement and analysis using the latest equipment.
We are also proud that our efforts contribute to the design of solutions for our customers.

 

Vibration, Shock and Audible Noise: Test Facilities to Provide Solutions

Items	Free fall test (JIS, IEC standards)	Vibration test (JIS, MIL standards)	Shock test (JIS, MIL standards)	Noise measurement (Relative comparison)
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Test summary	Drop height: 5 ~ 200cm	Vibration: sine, random	Wave shape: half sine/sawtooth	Baseline noise: 27dB (anechoic chamber)
	Specimen weight: Up to 2kg	Vibration force: 300kgf max	Pulse width: 1 ~ 100ms	Test level: 30 ~ 130dB
	Specimen size: 150 × 200mm	Vibration direction: vertical only	Vibration force: 300kgf	Properties: A, C, flat
	Impact surface: steel plate, concrete, etc.	Frequency: 5 ~ 3000Hz	Acceleration: 75G max	Test frequency: 20Hz ~ 20kHz
	Temperature: room temperature	Amplitude: 20mm max	Load: 150kg max
		Temperature: -40 ~ 150°C	Temperature: -40 ~ 150°C