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1. 发明公开

EP4303545A1 DENSITY ASYMMETRY MEASUREMENT METHOD AND APPARATUS 审中-公开
公开(公告)号：EP4303545A1
公开(公告)日：2024-01-10
申请号：EP22182810.6
申请日：2022-07-04
申请人： GrindoSonic BV
发明人： VAN DEN BOSSCHE, Alex
IPC分类号： G01H13/00 , G01H17/00 , G01M7/00 , G01N9/00 , G01N29/12 , G01N29/22 , G01N29/44
摘要： The present invention concerns a non-destructive method for measuring a density distribution deviation in a solid object, comprising the steps of: a) providing a first excitation pulse to the solid object, preferably a mechanical impact; b) obtaining a first vibrational response of the solid object to the first excitation pulse, and deriving a first eigenfrequency of a vibrational mode in a first orientation from said first vibrational response; c) providing a second excitation pulse to the solid object, preferably a mechanical impact; d) obtaining a second vibrational response of the solid object to the second excitation pulse, and deriving a second eigenfrequency of said vibrational mode in a second orientation from said second vibrational response, whereby the first excitation pulse is provided to the solid object at a first position and the second excitation pulse is provided to the solid object at a second position which is different from the first position such that the first orientation is different from the second orientation, and whereby the method further comprising the step of: e) comparing the first eigenfrequency with the second frequency, thereby obtaining a measure of the density distribution deviation in said solid object.

2. 发明公开

EP4170338A1 SUPPORT BED FOR IMPACT MEASUREMENTS 无效
公开(公告)号：EP4170338A1
公开(公告)日：2023-04-26
申请号：EP21204598.3
申请日：2021-10-25
申请人： GrindoSonic BV
发明人： VAN DEN BOSSCHE, Alex
IPC分类号： G01N29/04 , G01N29/12 , G01N29/22 , G01N29/32 , G01N29/46
摘要： The present invention relates to an impact excitation measurement system comprising a temperature controlled testing chamber, an impactor, a sensor system and a support system, wherein the impactor is configured to, at any testing temperature within a testing temperature range of between 0°C and 1600°C, provide an impact from below to a test piece supported by the support system, wherein the sensor system is configured to obtain a vibrational response of the test piece to the impact provided to the test piece by the impactor, wherein the support system comprises a bedding for supporting a solid test piece within the testing chamber, said bedding comprising an elasticity which is substantially larger than the elasticity of the test piece, said bedding further comprising a through for allowing the impactor to provide an impact to the test piece from below, wherein the impactor is configured to provide the impact to the test piece at an impact height which impact height is at least partially dependent upon the testing temperature, wherein the bedding is configured to support the test piece at a support height which differs from the impact height for at most 0.5 mm at any testing temperature within said testing temperature range.

3. 发明公开

EP4056985A1 IMPROVED SUPPORT FOR IMPACT MEASUREMENTS 无效
公开(公告)号：EP4056985A1
公开(公告)日：2022-09-14
申请号：EP21161386.4
申请日：2021-03-08
申请人： GrindoSonic BV
发明人： VAN DEN BOSSCHE, Alex
IPC分类号： G01N3/34 , G01N3/317 , G01N29/04 , G01N29/22
摘要： The present invention relates to an impact excitation measurement system comprising a testing chamber, an impactor, a sensor system and a support system, wherein the impactor is configured to provide an impact to a test piece supported by the support system at said predetermined height, wherein the sensor system is configured to obtain a vibrational response of the test piece to an impact provided to the test piece by the impactor, wherein the support system is configured to support a solid test piece at a predetermined height within the testing chamber, wherein the support system comprises a set of support bars (needles) which are made of a thermally stable material, the set of support bars comprising at least three support bars each having a support end, which three support ends are positioned non-collinearly.

4. 发明公开

EP4275038A1 IMPROVED ADDITIVE MANUFACTURING MONITORING METHOD AND SYSTEM 审中-实审
公开(公告)号：EP4275038A1
公开(公告)日：2023-11-15
申请号：EP22700585.7
申请日：2022-01-07
申请人： GrindoSonic BV
发明人： VAN DEN BOSSCHE, Alex
IPC分类号： G01N29/04 , B29C64/393 , B33Y50/02 , G01N29/12

5. 发明公开

EP3987283A1 METHOD AND SYSTEM FOR ANALYSING A TEST PIECE USING A VIBRATIONAL RESPONSE SIGNAL 有权
公开(公告)号：EP3987283A1
公开(公告)日：2022-04-27
申请号：EP20736925.7
申请日：2020-06-22
申请人： GrindoSonic BV
发明人： VAN DEN BOSSCHE, Alex
IPC分类号： G01N29/04 , G01M7/08 , G01N3/34 , G01N29/22 , G01N29/44 , G01N25/16

6. 发明公开

EP4423493A1 SUPPORT BED FOR IMPACT MEASUREMENTS 审中-公开
公开(公告)号：EP4423493A1
公开(公告)日：2024-09-04
申请号：EP22808810.0
申请日：2022-10-25
申请人： GrindoSonic BV
发明人： VAN DEN BOSSCHE, Alex
IPC分类号： G01N29/04 , G01N29/12 , G01N29/22 , G01N29/32 , G01N29/46
CPC分类号： G01N29/045 , G01N29/12 , G01N29/223 , G01N29/228 , G01N29/326 , G01N29/46 , G01N2291/01420130101 , G01N2291/263220130101

7. 发明公开

EP4327069A1 IMPROVED SUPPORT FOR IMPACT MEASUREMENTS 审中-实审
公开(公告)号：EP4327069A1
公开(公告)日：2024-02-28
申请号：EP22711951.8
申请日：2022-03-08
申请人： GrindoSonic BV
发明人： VAN DEN BOSSCHE, Alex
IPC分类号： G01N3/34 , G01N3/317 , G01N29/04 , G01N29/22 , G01N3/30 , G01N29/44 , G01N29/46

8. 发明公开

EP4227662A1 IMPROVED POSITIONING TABLE FOR IMPACT EXCITATION MEASUREMENTS 审中-公开
公开(公告)号：EP4227662A1
公开(公告)日：2023-08-16
申请号：EP22156669.8
申请日：2022-02-14
申请人： GrindoSonic BV
发明人： VAN DEN BOSSCHE, Alex
IPC分类号： G01N3/02 , G01N3/30 , G01M7/02 , G01M7/08
摘要： The present invention concerns an impact excitation (IE) measurement system for measuring the vibrational response of a solid piece to an impulse impact, comprising: an impactor for providing an impact to a solid piece; a sensor for obtaining a vibrational response of the solid piece to the impact; a support system for supporting the solid piece during providing the impact and obtaining the vibrational response; a positioning table comprising: a piece holder configured to receive the solid piece in a predetermined holder position with respect to the piece holder, and an actuator operably connected to the piece holder and configured to: transfer the piece holder with a solid piece in said predetermined holder position to the support system; place the solid piece on the support system in a predetermined support position, and displace the piece holder such that the solid piece is supported solely by the support system during providing the impact and obtaining the vibrational response.

9. 发明公开

EP4180793A1 IMPROVED IMPACT DEVICE FOR IMPACT EXCITATION MEASUREMENTS 无效
公开(公告)号：EP4180793A1
公开(公告)日：2023-05-17
申请号：EP21208250.7
申请日：2021-11-15
申请人： GrindoSonic BV
发明人： VAN DEN BOSSCHE, Alex
IPC分类号： G01N3/30
摘要： The present invention concerns an impact device for imparting an impulse impact to a work piece during an impact excitation measurement, the device comprising: - an elongated elastic bendable arm which is elastically deformable around a bending direction, the bendable arm comprising a proximal longitudinal end and a distal longitudinal end; - a hammer tip for mechanically providing an impact to the work piece, the hammer tip attached to the distal end of the arm, and - a programmable actuator attached to the proximal longitudinal end of the arm, whereby the actuator is programmed to provide an angular velocity to the proximal longitudinal end of the arm by rotating said proximal longitudinal end around an actuator axis which is essentially parallel to the bending direction of the arm, the angular velocity following a predefined angular velocity profile, whereby said angular velocity profile is configured to provide an impulse impact to the work piece

10. 发明公开

EP4027138A1 IMPROVED ADDITIVE MANUFACTURING MONITORING METHOD AND SYSTEM 无效
公开(公告)号：EP4027138A1
公开(公告)日：2022-07-13
申请号：EP21150518.5
申请日：2021-01-07
申请人： GrindoSonic BV
发明人： VAN DEN BOSSCHE, Alex
IPC分类号： G01N29/04 , B29C64/393 , B33Y50/02 , G01N29/12
摘要： The present invention concerns a method for non-destructively detecting deviating additive manufacturing (AM) process behaviour of a 3D printed solid piece, comprising the steps of: providing an impact to the solid piece, preferably a mechanical impact; obtaining a vibrational response of the solid piece to the impact in the frequency domain; extracting a set of eigenfrequencies, and optionally attenuations, from the vibrational response, each of said eigenfrequencies corresponding to a vibrational mode of said solid piece; obtaining for at least one vibrational mode: an eigenfrequency shift by comparing one of the set of extracted eigenfrequencies corresponding to said vibrational mode to a reference eigenfrequency value of said vibrational mode, thereby detecting the deviating AM process behaviour.

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