Engineering Dynamics Incorporated (EDI) is an independent engineering firm specializing in vibration and acoustics. EDI was established in 1982 and has offices in San Antonio and Houston, Texas. EDI performs API pulsation, mechanical, piping, torsional vibration, and finite element analyses as well as field diagnostics, machinery troubleshooting, strain gage measurements, operating deflection shape, and motional amplification video. EDI services a wide range of industries such as oil and gas transmission, petrochemical plants and refineries, power generation, and water pumping stations.