SOUTHWEST RESEARCH INSTITUTE

image of changes in surface characteristics at critical boundaries in micrographs of a fuel injector tip.

Fuel Systems and Contamination Research

 

Impulse Test

 

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Most industrial machinery dealing with fluids experience cyclic pressure load from time to time. Unlike the steady-state load, cyclic load can cause more severe malfunctions or damage and eventually shortens service life of the machines.
 

image of graph showing high-pressure impulse profile

High-pressure impulse profile

 

Test Stands for Impulse Testing

Southwest Research Institute (SwRI) staff have developed three dedicated test stands to perform impulse tests to help component and machinery manufacturers to evaluate the cyclic load environment. These impulse test stands cover a very wide range of pressures such as:

  • Low Pressure Range: 0–300 psi

  • Medium Pressure Range: 0–4,000 psi

  • High Pressure Range: 0–30,000 psi

image of graph showing low-pressure impulse profile

Low-pressure impulse profile


These test stands are carefully developed and can be used to conduct impulse tests in accordance with ISO, SAE, and Military specifications. They can also be used to conduct nonstandard or industrial-specific impulse tests to evaluate components such as:

  • Fuel hoses

  • Oil hoses

  • Seals

  • Fuel rails and injectors

  • Pressure sensors

  • Fuel filters

  • Oil filters

For more information about impulse test capabilities at SwRI or how you can contract with SwRI, please contact Xiaojian Tao, Ph.D., at xtao@swri.org or (210) 522-6962.
 

Contact Information

Xiaojian Tao, Ph.D.

Fuel Systems and Contamination Research

(210) 522-6962

xtao@swri.org

Related Terminology

industrial machinery

cyclic pressure load

impulse testing

cyclic load evaluation

ISO compliance

SAE specifications

MIL specs

component evaluation

 

| Fuels and Lubricants Technology Department | Fuels and Lubricants Research Division | SwRI Home |

Southwest Research Institute® (SwRI®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 12 technical divisions.

September 22, 2009