Brüel & Kjær Sound & Vibration Measurement A/S

Noise monitoring solutions for repetitive testing - Monitoring and Testing

Many analytical tools used for research and development focus on making single measurements, and are designed accordingly. However, in many industries, test programs are performed that involve large numbers of repeated tests on test objects in various configurations or with various modifications. This is repetitive testing. The tests done are generally standardised, and often performed in a dedicated test area.

The distinct patterns of work associated with repetitive testing include:

  • Dedicated test area and equipment
  • High test throughput
  • Large amounts of data generated
  • Data end users are different to those making the measurements
  • Different skill levels among the operators
  • A range of 'standard' (known) tests performed

All these characteristics require a special type of system or a combination of systems. The issues are no longer just about what analyses the system is capable of, but a host of other related and unrelated issues such as:

  • Measurement cycle time - how quickly can you get the measurement done (including setup time and reporting)
  • How quickly can the system be reconfigured for a different standard test
  • What are the system calibration requirements
  • How fast can you get the data to the end user
  • Ease of operation - how quickly can the test personnel come up to speed on the system and what level of expertise is needed to operate the system for a standard test
  • Data management - how is the data to be correctly stored so that it is easily retrieved
  • How easy is it to compare results from different tests

This requires a lot more than a basic measurement machine (analyzer). The system must be open to automation and user interface customisation as well as have some means of storing measurement configurations so that it can be rapidly switched between different measurements. Some form of data management system also needs to be in place for the orderly storage of measurement data, and the data must be in a format that allows it to be used by people away from the test cell without expensive 'viewing' software.