Abstract: A detonation wavefront controller for a linear shaped charge, comprising a first part and a second part. The first part comprises: a detonator holder, and a first aperture having a first width and a shape which is substantially a cyclic polygon, substantially an ellipse or substantially circular. The second part comprises: a second aperture having a second width larger than the first width. With the first part at least partly received within the second part, the first part is moveable relative to the second part to configure the detonation wavefront controller at least between: a first configuration with a first distance between the first aperture and the second aperture, and a second configuration with a second distance between the first aperture and the second aperture, the second distance larger than the first distance.

Abstract: Examples relate to a mounting device for an explosive charge, comprising a first layer comprising a first foam material, and a second layer comprising a second foam material. The first layer comprises a first surface for facing a target and a second surface adjoining the second layer. The second layer comprises a recess for receiving at least one of the explosive charges.

Abstract: A linear shaped charge comprising a body comprising a foam material, a first explosive element, a second explosive element, a liner and a channel at least partly between the first explosive element and the second explosive element. A related structure is also described, with a first cavity configured to receive a first explosive element and a second cavity configured to receive a second explosive element.

Abstract: A frame for a linear shaped charge. In examples, the frame comprises: a first plate having a first surface; and a second plate having a second surface. The frame is configurable between an un-collapsed state and a collapsed state. In the un-collapsed state, there is a void for receipt of explosive material, with the first surface as a first side of the void, the second surface as a second side of the void, and the first surface angled relative to the second surface by an angle within the void of greater than 180°. In the collapsed state the void is at least partly collapsed.

Abstract: A detonation wavefront controller for a linear shaped charge, comprising a first part and a second part. The first part comprises: a detonator holder, and a first aperture having a first width and a shape which is substantially a cyclic polygon, substantially an ellipse or substantially circular. The second part comprises: a second aperture having a second width larger than the first width. With the first part at least partly received within the second part, the first part is moveable relative to the second part to configure the detonation wavefront controller at least between: a first configuration with a first distance between the first aperture and the second aperture, and a second configuration with a second distance between the first aperture and the second aperture, the second distance larger than the first distance.

Abstract: One or more aspects of the present disclosure relate to a method of at least partly manufacturing a liner for a linear shaped charge. The method can include coating each of a plurality of metal particles with a non-metal, to form a plurality of coated spherical particles; mixing, without a solvent, the plurality of coated spherical particles with a polymer binder and at least one of: a filler, a dry lubricant, or a wet lubricant, until a flexible material is formed with the plurality of coated spherical particles dispersed homogeneously in the polymer binder and the flexible material has a mass of at least 5,700 kg per cubic meter volume of the flexible material; and at least partly forming a liner for the linear shaped charge from the flexible material.

Abstract: Examples relate to a linear shaped charge support structure configured to support a linear shaped charge in a canted configuration with at least part of the linear shaped charge canted about a longitudinal axis of the linear shaped charge. Examples relates to a linear shaped charge, the linear shaped charge support structure comprising a linear shaped charge, and a support frame comprising the linear shaped charge support structure and a non-linear shaped charge support structure.

Abstract: A linear shaped charge comprising a body comprising a foam material, a first explosive element, a second explosive element, a liner and a channel at least partly between the first explosive element and the second explosive element. A related structure is also described, with a first cavity configured to receive a first explosive element and a second cavity configured to receive a second explosive element.

Abstract: A frame for a linear shaped charge. In examples, the frame comprises: a first plate having a first surface; and a second plate having a second surface. The frame is configurable between an un-collapsed state and a collapsed state. In the un-collapsed state, there is a void for receipt of explosive material, with the first surface as a first side of the void, the second surface as a second side of the void, and the first surface angled relative to the second surface by an angle within the void of greater than 180°. In the collapsed state the void is at least partly collapsed.

Abstract: A method and an arrangement is provided for measuring the tightness of a core composed of laminated sheets used in an electric machine. The method for measuring the tightness of a core of an electric machine composed of sheets, includes supplying a sound wave to the core, measuring the speed of the sound wave in the core, and deducing the tightness of the core from the measured data. The arrangement to measure the tightness of a core of an electric machine composed of sheets, includes a hammering system to pound at the core for generating a sound wave in the core, at least two accelerometers arranged at the core at an axial distance for measuring the speed of the sound wave, and a computer to deduce the tightness of the core from the measured data.

Abstract: One or more aspects of the present disclosure relate to a method of at least partly manufacturing a liner for a linear shaped charge. The method can include coating each of a plurality of metal particles with a non-metal, to form a plurality of coated spherical particles; mixing, without a solvent, the plurality of coated spherical particles with a polymer binder and at least one of: a filler, a dry lubricant, or a wet lubricant, until a flexible material is formed with the plurality of coated spherical particles dispersed homogeneously in the polymer binder and the flexible material has a mass of at least 5,700 kg per cubic meter volume of the flexible material; and at least partly forming a liner for the linear shaped charge from the flexible material.

Abstract: Examples relate to a mounting device for an explosive charge, comprising a first layer comprising a first foam material, and a second layer comprising a second foam material. The first layer comprises a first surface for facing a target and a second surface adjoining the second layer. The second layer comprises a recess for receiving at least one of the explosive charges.

Abstract: Examples relate to a linear shaped charge support structure configured to support a linear shaped charge in a canted configuration with at least part of the linear shaped charge canted about a longitudinal axis of the linear shaped charge. Examples relates to a linear shaped charge, the linear shaped charge support structure comprising a linear shaped charge, and a support frame comprising the linear shaped charge support structure and a non-linear shaped charge support structure.

Abstract: An inspection apparatus, including an extendable structure, an inspection probe, a drive, a sensor, and a processor. The extendable structure includes an end fixed to the inspection probe and insertable into a gap defined between a first surface and a second surface. The extendable structure is configured to maintain physical contact with the first surface as the end transitions across the first surface. The drive is configured to position the inspection probe. The current sensor is coupled to the drive and configured to measure a drive load over a period of time the inspection probe transitions across the first surface. The processor is coupled to the sensor and is configured to receive a signal associated with the drive load corresponding to movement of the inspection probe, and determine an operating condition of the extendable structure based on the drive load signal.

Abstract: One or more aspects of the present disclosure relate to a material comprising particles dispersed in a polymer matrix, wherein the particles include at least one metal and are packed in the polymer matrix with a density of at least 0.6 of the density of the at least one metal. The disclosure further relates to a shaped charge, an element for forming a liner of a shaped charge, and a kit for assembling a shaped charge.

Abstract: An inspection apparatus, including an extendable structure, an inspection probe, a drive, a sensor, and a processor. The extendable structure includes an end fixed to the inspection probe and insertable into a gap defined between a first surface and a second surface. The extendable structure is configured to maintain physical contact with the first surface as the end transitions across the first surface. The drive is configured to position the inspection probe. The current sensor is coupled to the drive and configured to measure a drive load over a period of time the inspection probe transitions across the first surface. The processor is coupled to the sensor and is configured to receive a signal associated with the drive load corresponding to movement of the inspection probe, and determine an operating condition of the extendable structure based on the drive load signal.

Abstract: A method and an arrangement is provided for measuring the tightness of a core composed of laminated sheets used in an electric machine. The method for measuring the tightness of a core of an electric machine composed of sheets, includes supplying a sound wave to the core, measuring the speed of the sound wave in the core, and deducing the tightness of the core from the measured data. The arrangement to measure the tightness of a core of an electric machine composed of sheets, includes a hammering system to pound at the core for generating a sound wave in the core, at least two accelerometers arranged at the core at an axial distance for measuring the speed of the sound wave, and a computer to deduce the tightness of the core from the measured data.

Abstract: One or more aspects of the present invention relate to a linear shaped charge comprising an explosive element, a liner, a face for application to a target object and a space between the liner and the face, the liner being arranged for projection through the space, towards the face, when the explosive element is detonated, and the explosive element and the liner having a V-shaped cross section, the liner lying in a groove of the V-shaped cross section of the explosive element, the liner having a length L of a side furthest from the face and the liner having a thickness T taken perpendicular to said length L, wherein an angle ? of an apex of the liner nearest the face is 101.5 to 106.5 degrees, and a stand-off distance SD between the face and a point of the liner nearest the face is 0.99 S to 1.21 S, S being a distance, parallel the stand-off distance SD, between the point of the liner nearest the face and the apex of the liner nearest the face.

Abstract: One or more aspects of the present invention relate to a shaped charge, including a linear shaped charge comprising an explosive element, a liner, a face for application to a target object and a space between the liner and the face, the liner being arranged for projection through the space, towards the face, when the explosive element is detonated, wherein the linear shaped charge comprises at least one film between the liner and the face. The invention further relates to an element for a shaped charge and a method of modifying a shaped charge.

Abstract: One or more aspects of the present invention relate to a shaped charge, including a linear shaped charge comprising an explosive element, a liner, a face for application to a target object and a space between the liner and the face, the liner being arranged for projection through the space, towards the face, when the explosive element is detonated, wherein the linear shaped charge comprises at least one film between the liner and the face. The invention further relates to an element for a shaped charge and a method of modifying a shaped charge.