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Engineering development of flexible selectivity grids for Nephrops ArchiMer
Loaec, Henri; Morandeau, Fabien; Meillat, Marc; Davies, Peter.
There are different approaches to selectivity, including increasing cod-end mesh size, square mesh panels and rigid grids. Selectivity grids have traditionally been produced to be as rigid as possible to maintain spacing but this can result in heavy, expensive grids, handling problems and brittleness. This paper presents an alternative approach using flexible polyurethane polymers to produce lightweight inexpensive grids with much improved damage tolerance and ease of handling, which also possess interesting selectivity characteristics. The material selection, design and development tests are described first, then preliminary sea trial results are presented. A flexible grid with a 20 mm spacing between bars performed successfully and enabled a reduction in...
Tipo: Text Palavras-chave: Damage resistance; Polyurethane; Nephrops; Grid; Size selection; By catch; Selectivity.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-1690.pdf
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