This article arises from a Workshop conducted by the Society of Environmental Engineers on 15 May 2001 and entitled "Future Vibration and Shock Testing". This was made up of presentations about current practice and likely future developments. Following the Workshop the Society Chairman, Bob Bootle, wrote in Environmental Engineering inviting discussion about how the field should develop, and in particular what was the future for the "Lalanne" methodology. We were not at the Workshop, and are not vibration specialists, but we have worked on fatigue analysis using frequency domain methods, which is a closely related field. We prepared the central part of this article (section 3) from written material presented at the Workshop, with the aim of understanding that material ourselves. When we had finished we felt the text might be useful as a contribution to the discussion Bob Bootle has asked for. To make the article more useful to non-specialists we have added a brief survey of current developments in section 2. Several of the presentations refer to a document by Christian Lalanne, of CEA/CESTA (reference 3), which is obviously an important part of any judgements on the Lalanne methodology. We completed the main text of this paper before we had a copy of that report, but have since obtained one. It is an extensive document, and we have only studied a small part of it. We have added an appendix about a key section from it, and considered this in our comments at the end of the main paper.
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