Applications:
Our team investigates and solves problems concerned principally with acoustics and vibration in systems as diverse as

• military aerospace and ground vehicles,
• automobiles,
• rail transport,
• marine systems,
• construction materials,
• office buildings,
• industrial machinery, and
• test facilities.  

General Testing:
Our team measures, analyzes, designs, develops, and recommends solution to meet the specialized needs of its clients. The close relationship between research and consulting activities allows QRDC to provide a unique perspective on solving real-world problems.

General acoustic testing and noise evaluation capabilities and experience include:

Sound Pressure Measurement
A-weighted Sound Pressure Levels at an operator position is one common form of presenting acoustic noise level. The Sound Pressure Level requirements depend on the type of product and the where it will be used.  Many testing standards are available to guide the product development and evaluation cycle.

Sound Power Measurement
In addition to Sound Pressure Level, Sound Power Level Information is also used to evaluate the total noise radiated by a product.  Specification of Sound Power Level is very common for European-market products. The Sound Power Level of a product may be calculated from a series of Sound Pressure Levels measurements.  Acoustic testing standards specify requirements for specific fields of product use.

Sound Intensity Measurement
Sound Intensity measurements allow for detailed noise maps of measurement surfaces to locate and identify noise sources in products as well as in the environment.  These maps may aid in reducing noise levels or tailoring acoustic signatures of products.
Sound Intensity testing also allows for the determination of Sound Power without the need for expensive acoustic testing in specialized anechoic chambers.  Sound Intensity measurements may be made in industrial settings, even in the presence of background noise.  This is not possible with conventional Sound Pressure Level-based measures of Sound Power.

Standards
Test standards typically dictate the loading conditions to apply to the product under test.  Test standards for shock and vibration testing are published by organizations such as International Standards Organization (ISO), Society of Automotive Engineers (SAE), American Society for Testing and Materials (ASTM), Institute of Electrical and Electronics Engineers (IEEE), American National Standards Institute (ANSI), European Telecommunications Standards Institute (ETSI), International Electrotechnical Commission (IEC), Underwriters Laboratories (UL), the European Community (CE/EN), and the US Military (MIL-STD).