Absztrakt Az additiv gyartastechnologiak terhoditasanak es gyors utemű fejlődesenek koszonhetően mar szamos teruleten gyartanak műszaki cellal keszult alkatreszeket additiv eljarasokkal. Ezen modellek eseteben letfontossagu, hogy a veluk szemben tamasztott elvarasoknak (meretpontossag, mechanikai szilardsag, stb.) megfeleljenek. Az ezt segitő vegeselemes szimulaciok kellően pontos futtatasa viszont csak az alapanyagok tulajdonsagainak, viselkedesenek ismereteben lehetseges. Az additiv gyartastechnologiak jellegeből fakadoan (retegről retegre tortenő epitkezes) sejthető, hogy ilyen modellek eseten nem alkalmazhato izotrop modell, vagyis a modellek iranyfuggő tulajdonsagokkal rendelkeznek. Jelen celja annak vizsgalata, hogy a retegződesi irany milyen hatassal van Polyjet eljarassal letrehozott probatestek huzasi-, nyomasi-, es hajlitasi tulajdonsagaira, illetve kemenysegere. Ennek erdekeben huzo-, nyomo-, es hajlitovizsgalatok, valamint kemenysegmeresek elvegzesevel vizsgaltuk az additiv technologiaval keszult modellek mechanikai tulajdonsagait. A kapott eredmenyek osszevetesre kerultek a kapcsolodo irodalmakkal, valamint a gyarto ceg katalogusadataival is. Osszessegeben elmondhato, hogy az additiv technologiakkal keszult modellek szerkezete nem izotrop, es ez a mechanikai tulajdonsagokat is befolyasolja. Kulcsszavak: 3D nyomtatas, additiv gyartastechnologiak, nyomtatasi orientacio, mechanikai tulajdonsagok Abstract Due to the expansion and rapid development of additive manufacturing technologies, technical parts are manufactured in many areas by additive processes. For these models it is vital to meet the required expectations (dimensional accuracy, mechanical strength, etc.). Although it is only possible to run the finite-element simulations that are sufficiently precise in the knowledge of the properties and behavior of the materials. Due to the nature of additive manufacturing technologies (layer-to-layer construction) it is conceivable that such models do not have an isotropic model, ie models have directional properties. This research investigates how the stratification direction affects the tensile, compressive, and flexural properties and hardness of the specimens created by the Polyjet method. For this purpose, the mechanical properties of the specimens were tested by performing tensile, compressive and flexural tests as well as hardness measurements. The results obtained were compared with related literature as well as the catalog information of the manufacturer. Overall, the structure of additive technologies is not isotropic, and it also affects the mechanical properties. Keywords: 3D printing, additive manufacturing, printing orientation, mechanical properties DOI: 10.17489/2018/1/01
{"title":"3D nyomtatási anyagok mechanikai tulajdonságainak meghatározása különböző nyomtatási irányokban","authors":"Parragh Márk, Manó Sándor","doi":"10.15289/BH.V11I1.264","DOIUrl":"https://doi.org/10.15289/BH.V11I1.264","url":null,"abstract":"Absztrakt Az additiv gyartastechnologiak terhoditasanak es gyors utemű fejlődesenek koszonhetően mar szamos teruleten gyartanak műszaki cellal keszult alkatreszeket additiv eljarasokkal. Ezen modellek eseteben letfontossagu, hogy a veluk szemben tamasztott elvarasoknak (meretpontossag, mechanikai szilardsag, stb.) megfeleljenek. Az ezt segitő vegeselemes szimulaciok kellően pontos futtatasa viszont csak az alapanyagok tulajdonsagainak, viselkedesenek ismereteben lehetseges. Az additiv gyartastechnologiak jellegeből fakadoan (retegről retegre tortenő epitkezes) sejthető, hogy ilyen modellek eseten nem alkalmazhato izotrop modell, vagyis a modellek iranyfuggő tulajdonsagokkal rendelkeznek. Jelen celja annak vizsgalata, hogy a retegződesi irany milyen hatassal van Polyjet eljarassal letrehozott probatestek huzasi-, nyomasi-, es hajlitasi tulajdonsagaira, illetve kemenysegere. Ennek erdekeben huzo-, nyomo-, es hajlitovizsgalatok, valamint kemenysegmeresek elvegzesevel vizsgaltuk az additiv technologiaval keszult modellek mechanikai tulajdonsagait. A kapott eredmenyek osszevetesre kerultek a kapcsolodo irodalmakkal, valamint a gyarto ceg katalogusadataival is. Osszessegeben elmondhato, hogy az additiv technologiakkal keszult modellek szerkezete nem izotrop, es ez a mechanikai tulajdonsagokat is befolyasolja. Kulcsszavak: 3D nyomtatas, additiv gyartastechnologiak, nyomtatasi orientacio, mechanikai tulajdonsagok Abstract Due to the expansion and rapid development of additive manufacturing technologies, technical parts are manufactured in many areas by additive processes. For these models it is vital to meet the required expectations (dimensional accuracy, mechanical strength, etc.). Although it is only possible to run the finite-element simulations that are sufficiently precise in the knowledge of the properties and behavior of the materials. Due to the nature of additive manufacturing technologies (layer-to-layer construction) it is conceivable that such models do not have an isotropic model, ie models have directional properties. This research investigates how the stratification direction affects the tensile, compressive, and flexural properties and hardness of the specimens created by the Polyjet method. For this purpose, the mechanical properties of the specimens were tested by performing tensile, compressive and flexural tests as well as hardness measurements. The results obtained were compared with related literature as well as the catalog information of the manufacturer. Overall, the structure of additive technologies is not isotropic, and it also affects the mechanical properties. Keywords: 3D printing, additive manufacturing, printing orientation, mechanical properties DOI: 10.17489/2018/1/01","PeriodicalId":30208,"journal":{"name":"Biomechanica Hungarica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46218454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The mechanical properties of 3D printing materials in different printing orientations","authors":"Márk Parragh, S. Manó","doi":"10.17489/2018/1/01","DOIUrl":"https://doi.org/10.17489/2018/1/01","url":null,"abstract":"","PeriodicalId":30208,"journal":{"name":"Biomechanica Hungarica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44936342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Validation of a gait analysis system based on Augmented Reality markers","authors":"Gergely Nagymáté, R. Kiss","doi":"10.17489/2018/1/02","DOIUrl":"https://doi.org/10.17489/2018/1/02","url":null,"abstract":"","PeriodicalId":30208,"journal":{"name":"Biomechanica Hungarica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48405052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The role of head movement in human balancing","authors":"B. Kiss, R. Kiss","doi":"10.17489/2018/1/05","DOIUrl":"https://doi.org/10.17489/2018/1/05","url":null,"abstract":"","PeriodicalId":30208,"journal":{"name":"Biomechanica Hungarica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45449251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A csontok potlasara szamos sebeszeti beavatkozas soran szukseg lehet. Napjainkban jellemzően sorozatgyartott implantatumok beultetesevel kezelik a defektusokat. Ezek az implantatumok anyagukbol es tomor belső szerkezetukből eredően a kornyező csontszovetek szerkezetenek fellazulasat okozhatjak, ami hosszutavon az implantatum kilazulasahoz vezet. Az orvostechnikaban egyre nagyobb teret hodito additiv gyartastechnologiak lehetőve teszik az olyan szemelyre szabott implantatumok gyartasat, melyek belső strukturaja a csontszovetek mimetikajan alapszik. Ezek az egyedi tervezesű csontpotlasok porozus szerkezetuk reven szivosabbak, kedvező feszultsegviszonyokat teremtenek, ezert elettartamuk nagyobb a hagyomanyos, sorozatgyartott implantatumokenal. Jelen cikk a szemelyre szabott csontpotlo implantatumok tervezesi es gyartasi folyamatat ismerteti az irodalomfeldolgozas kritikai elemzese alapjan. Bone replacement may be required during many surgical interventions. Nowadays, defects are typically handled by implanting serial implants. Due to their material and solid internal structure these implants can cause degeneration in the structure of the surrounding bone tissues, resulting the loosening of the implant in the long run. Addictive manufacturing technologies that are gaining ground in healthcare make it possible to produce customized implants whose internal structure is based on the mimetics of bone tissue. Due to their porous structure these custom-designed bone replacements are more tough and create favorable tension, therefore they have a longer lifespan than conventional, serial implants. This article is a critical literature review of the design and manufacturing process of personalized bone replacements. DOI: 10.17489/2018/1/06
{"title":"Személyre szabott csontpótló implantátumok előállításának folyamata irodalomfeldolgozás alapján","authors":"Popovics Júlia, Manó Sándor, M. KissRita","doi":"10.15289/bh.v11i1.265","DOIUrl":"https://doi.org/10.15289/bh.v11i1.265","url":null,"abstract":"A csontok potlasara szamos sebeszeti beavatkozas soran szukseg lehet. Napjainkban jellemzően sorozatgyartott implantatumok beultetesevel kezelik a defektusokat. Ezek az implantatumok anyagukbol es tomor belső szerkezetukből eredően a kornyező csontszovetek szerkezetenek fellazulasat okozhatjak, ami hosszutavon az implantatum kilazulasahoz vezet. Az orvostechnikaban egyre nagyobb teret hodito additiv gyartastechnologiak lehetőve teszik az olyan szemelyre szabott implantatumok gyartasat, melyek belső strukturaja a csontszovetek mimetikajan alapszik. Ezek az egyedi tervezesű csontpotlasok porozus szerkezetuk reven szivosabbak, kedvező feszultsegviszonyokat teremtenek, ezert elettartamuk nagyobb a hagyomanyos, sorozatgyartott implantatumokenal. Jelen cikk a szemelyre szabott csontpotlo implantatumok tervezesi es gyartasi folyamatat ismerteti az irodalomfeldolgozas kritikai elemzese alapjan. Bone replacement may be required during many surgical interventions. Nowadays, defects are typically handled by implanting serial implants. Due to their material and solid internal structure these implants can cause degeneration in the structure of the surrounding bone tissues, resulting the loosening of the implant in the long run. Addictive manufacturing technologies that are gaining ground in healthcare make it possible to produce customized implants whose internal structure is based on the mimetics of bone tissue. Due to their porous structure these custom-designed bone replacements are more tough and create favorable tension, therefore they have a longer lifespan than conventional, serial implants. This article is a critical literature review of the design and manufacturing process of personalized bone replacements. DOI: 10.17489/2018/1/06","PeriodicalId":30208,"journal":{"name":"Biomechanica Hungarica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47658318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kristóf Rácz, Zsófia Pálya, M. Takács, Gergely Nagymáté, R. Kiss
{"title":"Investigation of calibration accuracy of anatomical landmarks in an optical motion analysis method","authors":"Kristóf Rácz, Zsófia Pálya, M. Takács, Gergely Nagymáté, R. Kiss","doi":"10.17489/2018/1/04","DOIUrl":"https://doi.org/10.17489/2018/1/04","url":null,"abstract":"","PeriodicalId":30208,"journal":{"name":"Biomechanica Hungarica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45816897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Investigation of the effect of gradually increasing running performance on the gait parameters","authors":"Zsófia Pálya, R. Kiss","doi":"10.17489/2018/1/03","DOIUrl":"https://doi.org/10.17489/2018/1/03","url":null,"abstract":"","PeriodicalId":30208,"journal":{"name":"Biomechanica Hungarica","volume":"115 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41251185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A kopas olyan mechanikai faktor, amely az terdizuleti implantatumok elettartamat legjelentősebben befolyasolja. Implantatumok eseteben a kopas vizsgalatahoz kulonboző berendezesekkel (pin-on-disc, terd szimulator) kiserleteket vegeznek, amely kiserletekben tobb parameter mellett, allando csuszva-gordulesi tenyezőt alkalmaznak. Az utobbi evekben megjelent cikkek alapjan, tobb szerző cafolja azt az allitast, hogy az allando csuszva-gordulesi tenyező megfelelő lenne a modellezesnel. Ez a terdizulet kapcsolodo geometriajanak bonyolultsagaval indokolhato, ami miatt a lokalis kinematika is tul komplexe valik az ilyen egyszerű feltetel alkalmazhatosagahoz. Ebben a tanulmanyban, a csuszva-gordules valtozasanak hatasat kivanjuk bemutatni egy jol ismert mechanikai kopas modellen, az un. Archard modellen. A modell altal kimutathatova valik, hogy a kopas a korabbi eredmenyekkel ellentetben, 10% tulbecsult a 0 es 60 behajlitasi fok koze eső tartomanyban, jaras soran, mig 65% alulbecsult a 0-120 behajlitasi fok koze eső tartomanyban, guggolas soran. DOI: 10.17489/biohun/2017/1/06
{"title":"Mechanikai modell a tibio-femoralis kapcsolat során fellépő kopás meghatározására térdimplantátumokban","authors":"Fekete Gusztáv, Biro Istvan, M. Béla","doi":"10.15289/BH.V10I1.236","DOIUrl":"https://doi.org/10.15289/BH.V10I1.236","url":null,"abstract":"A kopas olyan mechanikai faktor, amely az terdizuleti implantatumok elettartamat legjelentősebben befolyasolja. Implantatumok eseteben a kopas vizsgalatahoz kulonboző berendezesekkel (pin-on-disc, terd szimulator) kiserleteket vegeznek, amely kiserletekben tobb parameter mellett, allando csuszva-gordulesi tenyezőt alkalmaznak. Az utobbi evekben megjelent cikkek alapjan, tobb szerző cafolja azt az allitast, hogy az allando csuszva-gordulesi tenyező megfelelő lenne a modellezesnel. Ez a terdizulet kapcsolodo geometriajanak bonyolultsagaval indokolhato, ami miatt a lokalis kinematika is tul komplexe valik az ilyen egyszerű feltetel alkalmazhatosagahoz. Ebben a tanulmanyban, a csuszva-gordules valtozasanak hatasat kivanjuk bemutatni egy jol ismert mechanikai kopas modellen, az un. Archard modellen. A modell altal kimutathatova valik, hogy a kopas a korabbi eredmenyekkel ellentetben, 10% tulbecsult a 0 es 60 behajlitasi fok koze eső tartomanyban, jaras soran, mig 65% alulbecsult a 0-120 behajlitasi fok koze eső tartomanyban, guggolas soran. DOI: 10.17489/biohun/2017/1/06","PeriodicalId":30208,"journal":{"name":"Biomechanica Hungarica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48460961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-08-31DOI: 10.17489/BIOHUN/2017/1/01
Kristóf Andrónyi
{"title":"The life and the intellectual legacy of Prof. Gábor Krakovits","authors":"Kristóf Andrónyi","doi":"10.17489/BIOHUN/2017/1/01","DOIUrl":"https://doi.org/10.17489/BIOHUN/2017/1/01","url":null,"abstract":"","PeriodicalId":30208,"journal":{"name":"Biomechanica Hungarica","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43525243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-08-31DOI: 10.17489/BIOHUN/2017/1/03
Kristóf Andrónyi, G. Katona, G. Krakovits
{"title":"Determination of a reproducible flexion axis of the knee joint","authors":"Kristóf Andrónyi, G. Katona, G. Krakovits","doi":"10.17489/BIOHUN/2017/1/03","DOIUrl":"https://doi.org/10.17489/BIOHUN/2017/1/03","url":null,"abstract":"","PeriodicalId":30208,"journal":{"name":"Biomechanica Hungarica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46198267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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