ISPE Glossary of Pharmaceutical and Biotechnology Terminology

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The more widely spaced component of surface texture. Unless otherwise noted, waviness includes all irregularities whose spacing is greater than the roughness sampling length. Waviness may result from such factors as machine or work deflection, vibration, chatter, heat treatment, or warping strains. Roughness may be considered as superimposed on a "wavy" surface.


Undulations or rippling of the surfaces.

Publication Source: American Society of Mechanical Engineers (ASME), Bioprocessing Equipment (BPE) - 2009 Revision

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