Shell Oil Comapny

Dirk Arie Kronemeijer

Johannis Josephus Den Boer

Klisthenis Dimitriadis

Anthony Thomas Cole

Mark Theodoor Looijer

Jan Erik Vollebregt

Ricky Eduardo Ricardo Meyer

Petrus Johannes Van De Loo

A method for inspecting welds between welded tubular ends includes arranging a series electromagnetic acoustic transducer (EMAT) assemblies in circumferential direction adjacent to an inner and/or outer surface of at least one of the welded tubular ends and inducing the EMAT assemblies to transmit sequentially or simultaneously acoustic shear wave signals towards the weld and to detect the shear waves reflected by and/or passing through the weld while the EMAT assemblies are maintained in a substantially fixed position relative to the weld such that at least a substantial part of the weld is scanned by the EMAT assemblies instantly after the weld is made.

EMAT weld inspection

The present invention relates to a device for measuring the value of a parameter relating to an electrically conductive object. Such a parameter can be the electric conductivity or the degree in which the material has changed under the influence of external conditions. Alternatively the parameter is the quality of a weld or the thickness of the object.

Measuring a material property of an electrically conductive object

Growing community of inventors

Rijswijk, Netherlands

Dirk Arie Kronemeijer