Recent Work


Compressor Revamping – Cost-Effective engineering support for an economic alternative


Repurposing existing units makes good financial sense in slower economies.  It is important to consider the validity of the newly packaged system even though previous performance was successful.  IDC is familiar with the nuances associated with revamped systems.  When changes are required to insure superior performance, IDC is experienced in providing budget-friendly solutions that keep you running.

In the revamped systems we have seen in 2015 our team of engineers has demonstrated the IDC difference for our customers:

  • Utilization of our robust knowledge-base to obtain component data on older pieces to insure an accurate analysis within the customer’s tight timeframe

  • Maximize cost savings by incorporating new design with existing couplings so that only one new coupling hub was required for the unit.  This solution helped keep costs low and insured the unit would be up and running quickly – and not waiting on parts.

Automotive Shock Absorber Spring Pad Failure Correlation


An exact match of the failure pattern in the spring pad of an automotive shock absorber system was simulated using the measured loads. By changing the design at the hole locations in the pad, IDC enabled the customer overcome the failure issue.


Linear and Torsional Vibration Study for an Engine Driven Compressor System


In 2014, our Technical Manager presented at the Torsional Vibration Symposium in Salzburg, Austria. The presentation covered highlights from IDC’s recent study, “Linear and Torsional Vibration Study for an Engine Driven Compressor System.” The piece presented by our team focused on the coupled linear and torsional vibration behavior of an engine driven compressor systems analyzed in both time and frequency domain.  The article, co-written by our Lead Engineer, discusses the linear dynamic response of a compressor frame caused by crankshaft rotating speed differences due to torsional resonance.  They extended a previous paper’s findings to a more comprehensive study, including additional parameters such as torsional resonance, phasing angle, self-balance, multiple orders, and multiple stages.  Our team is looking forward to presenting new research at the 2017 TV Symposium!


Coupling Failure on Marine Propulsion Driveline


A marine propulsion driveline experienced a catastrophic failure of the rubber coupling between the engine and propulsion driveline even though the theoretical torsional vibration analysis did not predict any problems. Torsional measurements at the engine  and across the coupling showed a resonance of the coupling mode with unexpectedly high response levels near engine low idle speed due to governor interaction. IDC recommended raising the low idle speed of the system.