SYSTEM FOR ESTIMATING BOLT AXIAL FORCE
To provide a system capable of estimating bolt axial force of a bolt fastening part simply and highly accurately.SOLUTION: A bolt axial force estimation system according to the present invention comprises: a first analysis unit that acquires distribution of apparent strain of a master bolt 15 using...
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| creator | TANAKA KOHEI SHIRAHAMA YUKIHIRO KAWASHITA MICHIHIRO KOMURA AKIYOSHI SAWADA TAKAHIKO |
| description | To provide a system capable of estimating bolt axial force of a bolt fastening part simply and highly accurately.SOLUTION: A bolt axial force estimation system according to the present invention comprises: a first analysis unit that acquires distribution of apparent strain of a master bolt 15 using a first image taken of a top surface of the master bolt 15 at a first photographic distance D and a second image taken of the top surface of the master bolt 15 at a second photographic distance (D+ΔD); a second analysis unit that acquires distribution of apparent strain of an estimation target bolt 17 using a third image taken of a top surface of the estimation target bolt 17 at the first photographic distance D and a fourth image taken of the top surface of the estimation target bolt 17 at the second photographic distance (D+ΔD); a third analysis unit that acquires distribution of a change δi in deflection at the top surface of the estimation target bolt 17 from the difference between the distributions of these apparent strains; and a fourth analysis unit that estimates bolt axial force of the estimation target bolt 17 using the distribution of the change δi in deflection.SELECTED DRAWING: Figure 7
【課題】簡便で高精度にボルト締結部のボルト軸力を推定することができるシステムを提供する。【解決手段】本発明によるボルト軸力の推定システムは、第１の撮影距離Ｄでマスターボルト１５の頭頂面を撮影した第１の画像と、第２の撮影距離（Ｄ＋ΔＤ）でマスターボルト１５の頭頂面を撮影した第２の画像を用いて、マスターボルト１５の見かけひずみの分布を取得する第１分析部と、第１の撮影距離Ｄで推定対象ボルト１７の頭頂面を撮影した第３の画像と、第２の撮影距離（Ｄ＋ΔＤ）で推定対象ボルト１７の頭頂面を撮影した第４の画像を用いて、推定対象ボルト１７の見かけひずみの分布を取得する第２分析部と、これらの見かけひずみの分布の差分から、推定対象ボルト１７の頭頂面でのたわみ量の変化δｉの分布を取得する第３分析部と、このたわみ量の変化δｉの分布を用いて、推定対象ボルト１７のボルト軸力を推定する第４分析部とを有する。【選択図】図７ |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_JP2024085641A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>JP2024085641A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_JP2024085641A3</originalsourceid><addsrcrecordid>eNrjZFALjgwOcfVVcPMPUnANDvH0dQzx9HNXcPL3CVFwjPB09AHJOLvyMLCmJeYUp_JCaW4GJTfXEGcP3dSC_PjU4oLE5NS81JJ4rwAjAyMTAwtTMxNDR2OiFAEAB3Uj8Q</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>SYSTEM FOR ESTIMATING BOLT AXIAL FORCE</title><source>esp@cenet</source><creator>TANAKA KOHEI ; SHIRAHAMA YUKIHIRO ; KAWASHITA MICHIHIRO ; KOMURA AKIYOSHI ; SAWADA TAKAHIKO</creator><creatorcontrib>TANAKA KOHEI ; SHIRAHAMA YUKIHIRO ; KAWASHITA MICHIHIRO ; KOMURA AKIYOSHI ; SAWADA TAKAHIKO</creatorcontrib><description>To provide a system capable of estimating bolt axial force of a bolt fastening part simply and highly accurately.SOLUTION: A bolt axial force estimation system according to the present invention comprises: a first analysis unit that acquires distribution of apparent strain of a master bolt 15 using a first image taken of a top surface of the master bolt 15 at a first photographic distance D and a second image taken of the top surface of the master bolt 15 at a second photographic distance (D+ΔD); a second analysis unit that acquires distribution of apparent strain of an estimation target bolt 17 using a third image taken of a top surface of the estimation target bolt 17 at the first photographic distance D and a fourth image taken of the top surface of the estimation target bolt 17 at the second photographic distance (D+ΔD); a third analysis unit that acquires distribution of a change δi in deflection at the top surface of the estimation target bolt 17 from the difference between the distributions of these apparent strains; and a fourth analysis unit that estimates bolt axial force of the estimation target bolt 17 using the distribution of the change δi in deflection.SELECTED DRAWING: Figure 7
【課題】簡便で高精度にボルト締結部のボルト軸力を推定することができるシステムを提供する。【解決手段】本発明によるボルト軸力の推定システムは、第１の撮影距離Ｄでマスターボルト１５の頭頂面を撮影した第１の画像と、第２の撮影距離（Ｄ＋ΔＤ）でマスターボルト１５の頭頂面を撮影した第２の画像を用いて、マスターボルト１５の見かけひずみの分布を取得する第１分析部と、第１の撮影距離Ｄで推定対象ボルト１７の頭頂面を撮影した第３の画像と、第２の撮影距離（Ｄ＋ΔＤ）で推定対象ボルト１７の頭頂面を撮影した第４の画像を用いて、推定対象ボルト１７の見かけひずみの分布を取得する第２分析部と、これらの見かけひずみの分布の差分から、推定対象ボルト１７の頭頂面でのたわみ量の変化δｉの分布を取得する第３分析部と、このたわみ量の変化δｉの分布を用いて、推定対象ボルト１７のボルト軸力を推定する第４分析部とを有する。【選択図】図７</description><language>eng ; jpn</language><subject>BLASTING ; DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING ; ENGINEERING ELEMENTS AND UNITS ; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS ; HEATING ; LIGHTING ; MEASURING ; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE ; MECHANICAL ENGINEERING ; PHYSICS ; TESTING ; THERMAL INSULATION IN GENERAL ; WEAPONS</subject><creationdate>2024</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20240627&DB=EPODOC&CC=JP&NR=2024085641A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76294</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20240627&DB=EPODOC&CC=JP&NR=2024085641A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>TANAKA KOHEI</creatorcontrib><creatorcontrib>SHIRAHAMA YUKIHIRO</creatorcontrib><creatorcontrib>KAWASHITA MICHIHIRO</creatorcontrib><creatorcontrib>KOMURA AKIYOSHI</creatorcontrib><creatorcontrib>SAWADA TAKAHIKO</creatorcontrib><title>SYSTEM FOR ESTIMATING BOLT AXIAL FORCE</title><description>To provide a system capable of estimating bolt axial force of a bolt fastening part simply and highly accurately.SOLUTION: A bolt axial force estimation system according to the present invention comprises: a first analysis unit that acquires distribution of apparent strain of a master bolt 15 using a first image taken of a top surface of the master bolt 15 at a first photographic distance D and a second image taken of the top surface of the master bolt 15 at a second photographic distance (D+ΔD); a second analysis unit that acquires distribution of apparent strain of an estimation target bolt 17 using a third image taken of a top surface of the estimation target bolt 17 at the first photographic distance D and a fourth image taken of the top surface of the estimation target bolt 17 at the second photographic distance (D+ΔD); a third analysis unit that acquires distribution of a change δi in deflection at the top surface of the estimation target bolt 17 from the difference between the distributions of these apparent strains; and a fourth analysis unit that estimates bolt axial force of the estimation target bolt 17 using the distribution of the change δi in deflection.SELECTED DRAWING: Figure 7
【課題】簡便で高精度にボルト締結部のボルト軸力を推定することができるシステムを提供する。【解決手段】本発明によるボルト軸力の推定システムは、第１の撮影距離Ｄでマスターボルト１５の頭頂面を撮影した第１の画像と、第２の撮影距離（Ｄ＋ΔＤ）でマスターボルト１５の頭頂面を撮影した第２の画像を用いて、マスターボルト１５の見かけひずみの分布を取得する第１分析部と、第１の撮影距離Ｄで推定対象ボルト１７の頭頂面を撮影した第３の画像と、第２の撮影距離（Ｄ＋ΔＤ）で推定対象ボルト１７の頭頂面を撮影した第４の画像を用いて、推定対象ボルト１７の見かけひずみの分布を取得する第２分析部と、これらの見かけひずみの分布の差分から、推定対象ボルト１７の頭頂面でのたわみ量の変化δｉの分布を取得する第３分析部と、このたわみ量の変化δｉの分布を用いて、推定対象ボルト１７のボルト軸力を推定する第４分析部とを有する。【選択図】図７</description><subject>BLASTING</subject><subject>DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING</subject><subject>ENGINEERING ELEMENTS AND UNITS</subject><subject>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</subject><subject>HEATING</subject><subject>LIGHTING</subject><subject>MEASURING</subject><subject>MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE</subject><subject>MECHANICAL ENGINEERING</subject><subject>PHYSICS</subject><subject>TESTING</subject><subject>THERMAL INSULATION IN GENERAL</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2024</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFALjgwOcfVVcPMPUnANDvH0dQzx9HNXcPL3CVFwjPB09AHJOLvyMLCmJeYUp_JCaW4GJTfXEGcP3dSC_PjU4oLE5NS81JJ4rwAjAyMTAwtTMxNDR2OiFAEAB3Uj8Q</recordid><startdate>20240627</startdate><enddate>20240627</enddate><creator>TANAKA KOHEI</creator><creator>SHIRAHAMA YUKIHIRO</creator><creator>KAWASHITA MICHIHIRO</creator><creator>KOMURA AKIYOSHI</creator><creator>SAWADA TAKAHIKO</creator><scope>EVB</scope></search><sort><creationdate>20240627</creationdate><title>SYSTEM FOR ESTIMATING BOLT AXIAL FORCE</title><author>TANAKA KOHEI ; SHIRAHAMA YUKIHIRO ; KAWASHITA MICHIHIRO ; KOMURA AKIYOSHI ; SAWADA TAKAHIKO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2024085641A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; jpn</language><creationdate>2024</creationdate><topic>BLASTING</topic><topic>DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING</topic><topic>ENGINEERING ELEMENTS AND UNITS</topic><topic>GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS</topic><topic>HEATING</topic><topic>LIGHTING</topic><topic>MEASURING</topic><topic>MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE</topic><topic>MECHANICAL ENGINEERING</topic><topic>PHYSICS</topic><topic>TESTING</topic><topic>THERMAL INSULATION IN GENERAL</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>TANAKA KOHEI</creatorcontrib><creatorcontrib>SHIRAHAMA YUKIHIRO</creatorcontrib><creatorcontrib>KAWASHITA MICHIHIRO</creatorcontrib><creatorcontrib>KOMURA AKIYOSHI</creatorcontrib><creatorcontrib>SAWADA TAKAHIKO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>TANAKA KOHEI</au><au>SHIRAHAMA YUKIHIRO</au><au>KAWASHITA MICHIHIRO</au><au>KOMURA AKIYOSHI</au><au>SAWADA TAKAHIKO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>SYSTEM FOR ESTIMATING BOLT AXIAL FORCE</title><date>2024-06-27</date><risdate>2024</risdate><abstract>To provide a system capable of estimating bolt axial force of a bolt fastening part simply and highly accurately.SOLUTION: A bolt axial force estimation system according to the present invention comprises: a first analysis unit that acquires distribution of apparent strain of a master bolt 15 using a first image taken of a top surface of the master bolt 15 at a first photographic distance D and a second image taken of the top surface of the master bolt 15 at a second photographic distance (D+ΔD); a second analysis unit that acquires distribution of apparent strain of an estimation target bolt 17 using a third image taken of a top surface of the estimation target bolt 17 at the first photographic distance D and a fourth image taken of the top surface of the estimation target bolt 17 at the second photographic distance (D+ΔD); a third analysis unit that acquires distribution of a change δi in deflection at the top surface of the estimation target bolt 17 from the difference between the distributions of these apparent strains; and a fourth analysis unit that estimates bolt axial force of the estimation target bolt 17 using the distribution of the change δi in deflection.SELECTED DRAWING: Figure 7
【課題】簡便で高精度にボルト締結部のボルト軸力を推定することができるシステムを提供する。【解決手段】本発明によるボルト軸力の推定システムは、第１の撮影距離Ｄでマスターボルト１５の頭頂面を撮影した第１の画像と、第２の撮影距離（Ｄ＋ΔＤ）でマスターボルト１５の頭頂面を撮影した第２の画像を用いて、マスターボルト１５の見かけひずみの分布を取得する第１分析部と、第１の撮影距離Ｄで推定対象ボルト１７の頭頂面を撮影した第３の画像と、第２の撮影距離（Ｄ＋ΔＤ）で推定対象ボルト１７の頭頂面を撮影した第４の画像を用いて、推定対象ボルト１７の見かけひずみの分布を取得する第２分析部と、これらの見かけひずみの分布の差分から、推定対象ボルト１７の頭頂面でのたわみ量の変化δｉの分布を取得する第３分析部と、このたわみ量の変化δｉの分布を用いて、推定対象ボルト１７のボルト軸力を推定する第４分析部とを有する。【選択図】図７</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BLASTING DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MEASURING MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE MECHANICAL ENGINEERING PHYSICS TESTING THERMAL INSULATION IN GENERAL WEAPONS |
| title | SYSTEM FOR ESTIMATING BOLT AXIAL FORCE |
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