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公开(公告)号：AU2013343276B2
公开(公告)日：2017-11-02
申请号：AU2013343276
申请日：2013-11-06
Applicant: BAE SYSTEMS PLC
Inventor： SIDHU JAGJIT , WESCOTT ANDREW DAVID , POTTER MARK ALFRED
Abstract: Apparatus and a method for forming a metallic component by additive layer manufacturing are provided. The method includes the steps of mounting a work piece (3) to ALM manufacturing apparatus including measuring means in the form of load cells (13, 14) to measure stresses tending to distort the work piece, using a laser heat source (24) to apply heat to a surface (18) of the work piece (3) sufficient to melt it;adding metallic material to the melted surface (18) and moving the heat source (24) relative to the work piece (3) whereby progressively to form a layer (30) of metallic material on it; repeating the above steps as required, whereby progressively to form the component and, while doing so, measuring stresses tending to distort the component with the load cells (13, 14) and, if they are above a predetermined threshold, stress relieving the work piece with means such as a pulsed laser (27) while still mounted to the apparatus to reduce distortion to a predetermined level, and again repeating above steps as required to complete the component. A computer (16) may be included to control the whole process.
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公开(公告)号：GB2508335A
公开(公告)日：2014-06-04
申请号：GB201220225
申请日：2012-11-09
Applicant: BAE SYSTEMS PLC
Inventor： SIDHU JAGJIT , WESCOTT ANDREW DAVID , POTTER MARK ALFRED
Abstract: A method of forming a metallic component 3 by additive layer manufacturing where metal is added to a weld pool formed on the component 3. While the component 3 is being formed, stress in the component 3 is measured and if it is greater than a predetermined value then the component 3 is stress relieved. Stress can be measured by measuring the distortion across at least a substantial portion of the component 3, for example using load cells 13 & 14 to measure the force experienced by the component 3 where it is clamped to the apparatus on which it is formed. Stress relief can be by high frequency peening using a pulsed laser or ultra-sonic impact, annealing or creep forming. The component 3 can be cooled before it is stress relieved.
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公开(公告)号：AU2013336416B2
公开(公告)日：2017-06-08
申请号：AU2013336416
申请日：2013-10-21
Applicant: BAE SYSTEMS PLC
Inventor： BAKER DAVID , REZAI AMIR , WESCOTT ANDREW DAVID , GRAHAM DANIEL PETER
Abstract: A method for forming a joint between a fibre reinforced composite component and a metallic component and a joint are provided. The metallic component and the composite component each define a joint surface for mating with the joint surface of the other to join the two components together and the composite component defines a free surface opposed to the joint surface thereof. The joint surface of the metallic component defines an array of pins extending therefrom with each pin defining a pin head at an end distal from the joint surface. The method includes the steps of pressing together the joint surfaces of the two components whereby to cause the array of pins to penetrate through the fibre reinforcing material, and modifying the effective cross sectional shape of the pin heads whereby to increase the constraint applied to the composite component against peeling of the composite component from the joint surface of the metallic component.
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公开(公告)号：GB2508335B
公开(公告)日：2016-04-06
申请号：GB201220225
申请日：2012-11-09
Applicant: BAE SYSTEMS PLC
Inventor： SIDHU JAGJIT , WESCOTT ANDREW DAVID , POTTER MARK ALFRED
IPC: B23K26/342 , B23K9/04
Abstract: A method of forming a metallic component 3 by additive layer manufacturing where metal is added to a weld pool formed on the component 3. While the component 3 is being formed, stress in the component 3 is measured and if it is greater than a predetermined value then the component 3 is stress relieved. Stress can be measured by measuring the distortion across at least a substantial portion of the component 3, for example using load cells 13 & 14 to measure the force experienced by the component 3 where it is clamped to the apparatus on which it is formed. Stress relief can be by high frequency peening using a pulsed laser or ultra-sonic impact, annealing or creep forming. The component 3 can be cooled before it is stress relieved.
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公开(公告)号：GB2507128A
公开(公告)日：2014-04-23
申请号：GB201218957
申请日：2012-10-22
Applicant: BAE SYSTEMS PLC
Inventor： BAKER DAVID , REZAI AMIR , WESCOTT ANDREW DAVID , GRAHAM DANIEL PETER
Abstract: A method for forming a joint between a fibre reinforced composite component and a metallic component and a joint are provided. The metallic component and the composite component each define a joint surface for mating with the joint surface of the other to join the two components together and the composite component defines a free surface opposed to the joint surface thereof. The joint surface of the metallic component defines an array of pins extending therefrom with each pin defining a pin head 9 at an end distal from the joint surface. The method includes the steps of pressing together the joint surfaces of the two components whereby to cause the array of pins to penetrate through the fibre reinforcing material, and modifying the effective cross sectional shape of the pin heads whereby to increase the constraint applied to the composite component against peeling of the composite component from the joint surface of the metallic component. The pin heads may be deformed by deflecting a tip of the pin, riveting, spreading or splitting to modify the cross-section. Alternatively, a retaining means, cap or mesh may be attached to the pin heads. The pin heads extend over the free surface of the composite component.
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Patent Agency Ranking
公开(公告)号：AU2013237225B2
公开(公告)日：2017-01-05
申请号：AU2013237225
申请日：2013-03-18
Applicant: BAE SYSTEMS PLC
Inventor： WESCOTT ANDREW DAVID , SIDHU JAGJIT
Abstract: Apparatus and a method for forming a metallic component by additive layer manufacturing are provided. The method includes the steps of using a heat source such as a laser to melt the surface of a work piece and form a weld pool; adding wire or powdered metallic material to the weld pool and moving the heat source relative to the work piece so as to progressively form a new layer of metallic material on the work piece; applying forced cooling to the formed layer; stress relieving the cooled layer by applying a peening step, for example with a pulsed laser, and repeating the above steps as required to form the component layer by layer.
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公开(公告)号：CA2971010A1
公开(公告)日：2016-06-30
申请号：CA2971010
申请日：2015-12-04
Applicant: BAE SYSTEMS PLC
Inventor： PARK NICHOLAS , JENKINS SIMON ANTHONY , WESCOTT ANDREW DAVID , WATSON ELENA MAEVE
Abstract: Modular armour is provided. The armour comprises a series of regularly-shaped armour elements (10) and corresponding anchor elements (4) releasably to anchor the armour elements (10) to a platform (1). Each anchor element (4) comprises an armour engaging section extending between first and second ends thereof, the first end being engageable with an armour mount on the platform and the second end (7) including means (6) releasably to secure the armour element (10), while engaged with the anchor element, to the platform. The platform may be fixed or mobile and includes land, water-born and air vehicles.
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公开(公告)号：GB2493537A
公开(公告)日：2013-02-13
申请号：GB201113756
申请日：2011-08-10
Applicant: BAE SYSTEMS PLC
Inventor： SIDHU JAGJIT , WESCOTT ANDREW DAVID
Abstract: A method and apparatus for forming a layered structure. At least one raised 5 area (202) is formed on a work piece (200 e.g. by casting forging or cold working, a structure (302) is formed on the raised area using an Additive Layer Manufacturing (ALM) process e.g. by laser sintering of metal powder or by solid wire arc deposition.
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公开(公告)号：SG173534A1
公开(公告)日：2011-09-29
申请号：SG2011056132
申请日：2010-02-09
Applicant: BAE SYSTEMS PLC
Inventor： WESCOTT ANDREW DAVID , MORELAND BENJAMIN RICHARD , SIDHU JAGIT
Abstract: A method of fabricating an object is disclosed. A first layer of powder is deposited onto a substrate in a configuration defining a first cross-section of the object, and is consolidated by laser irradiation. To fabricate the object, further layperson powder are then deposited onto the sintered first layer of powder to define further cross-sections of the object, and the further layers consolidated. A heat source is applied to the substrate in order to mitigate distortion of the substrate during fabrication of the object.
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公开(公告)号：AU2013343276A2
公开(公告)日：2015-07-23
申请号：AU2013343276
申请日：2013-11-06
Applicant: BAE SYSTEMS PLC
Inventor： SIDHU JAGJIT , WESCOTT ANDREW DAVID , POTTER MARK ALFRED
Abstract: Apparatus and a method for forming a metallic component by additive layer manufacturing are provided. The method includes the steps of mounting a work piece (3) to ALM manufacturing apparatus including measuring means in the form of load cells (13, 14) to measure stresses tending to distort the work piece, using a laser heat source (24) to apply heat to a surface (18) of the work piece (3) sufficient to melt it;adding metallic material to the melted surface (18) and moving the heat source (24) relative to the work piece (3) whereby progressively to form a layer (30) of metallic material on it; repeating the above steps as required, whereby progressively to form the component and, while doing so, measuring stresses tending to distort the component with the load cells (13, 14) and, if they are above a predetermined threshold, stress relieving the work piece with means such as a pulsed laser (27) while still mounted to the apparatus to reduce distortion to a predetermined level, and again repeating above steps as required to complete the component. A computer (16) may be included to control the whole process.
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