![]() This was a goals & objectives document in which they discussed the technology and maintenance concepts that they believed would be necessary to enhance safety while reducing maintenance costs in their next generation vehicles. They created NASA-CR-192656, in 1992 with the assistance of the General Research Corporation and the Orbital Technologies Corporation. NASA was one of the first organisations to use the name IVHM to describe how they wanted to approach maintenance of spacecraft in the future. The high unit cost & high maintenance cost of aircraft & spacecraft made any advance in maintenance methods very attractive. As sensors improved and our understanding of the systems concerned grew, it became possible to not just detect failure but also to predict it. It was a natural next step from condition based maintenance. IVHM as a concept grew out of popular aviation maintenance methods. ![]() However, there does not seem to be much in the way of written evidence of this. It has been suggested that IVHM as a named concept has been around since the 1970s. This is achieved through correct use of reliable sensing and prognosis systems to monitor part health and also using usage data to assist in understanding the load experienced and likely future vehicle load. Reduce total cost of maintenance through reduction of unnecessary maintenance and avoidance of unscheduled maintenance.Improve reliability through a more thorough understanding of the current health of the system and prognosis based maintenance.Improve availability through better maintenance scheduling.Improve safety through use of diagnostics and prognostics to fix faults before they are an issue.The aims of IVHM are to enable better management of vehicle and vehicle fleet health. Integrated vehicle health management ( IVHM) or integrated system health management ( ISHM) is the unified capability of systems to assess the current or future state of the member system health and integrate that picture of system health within a framework of available resources and operational demand.
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