{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,4]],"date-time":"2026-11-04T02:13:26Z","timestamp":1793758406032,"version":"4.6.1"},"reference-count":42,"publisher":"MDPI AG","issue":"15","license":[{"start":{"date-parts":[[2020,7,29]],"date-time":"2020-07-29T00:00:00Z","timestamp":1595980800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100008530","name":"European Regional Development Fund","doi-asserted-by":"publisher","award":["14.2.1.4 - 2017\/3UdS"],"award-info":[{"award-number":["14.2.1.4 - 2017\/3UdS"]}],"id":[{"id":"10.13039\/501100008530","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Using additive manufacturing to generate a polymer\u2013metal structure offers the potential to achieve a complex customized polymer structure joined to a metal base of high stiffness and strength. A tool to evaluate the generated interface during the process is of fundamental interest, as the sequential deposition of the polymer as well as temperature gradients within the substrate lead to local variations in adhesion depending on the local processing conditions. On preheated aluminum substrates, 0.3 and 0.6 mm high traces of polylactic acid (PLA) were deposited. Based on differential scanning calorimetry (DSC) and rheometry measurements, the substrate temperature was varied in between 150 and 200 \u00b0C to identify an optimized manufacturing process. Decreasing the layer height and increasing the substrate temperature promoted wetting and improved the adhesion interface performance as measured in a single lap shear test (up to 7 MPa). Thermographic monitoring was conducted at an angle of 25\u00b0 with respect to the substrate surface and allowed a thermal evaluation of the process at any position on the substrate. Based on the thermographic information acquired during the first second after extrusion and the preset shape of the polymer trace, the resulting wetting and shear strength were estimated.<\/jats:p>","DOI":"10.3390\/ma13153371","type":"journal-article","created":{"date-parts":[[2020,7,30]],"date-time":"2020-07-30T03:36:38Z","timestamp":1596080198000},"page":"3371","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":18,"title":["Estimation of the Adhesion Interface Performance in Aluminum-PLA Joints by Thermographic Monitoring of the Material Extrusion Process"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3588-8287","authenticated-orcid":false,"given":"Stephan","family":"Bechtel","sequence":"first","affiliation":[{"name":"Chair for Lightweight Systems, Saarland University, Campus E3 1, 66123 Saarbr\u00fccken, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mirko","family":"Meisberger","sequence":"additional","affiliation":[{"name":"Chair for Lightweight Systems, Saarland University, Campus E3 1, 66123 Saarbr\u00fccken, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Samuel","family":"Klein","sequence":"additional","affiliation":[{"name":"Chair for Lightweight Systems, Saarland University, Campus E3 1, 66123 Saarbr\u00fccken, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tobias","family":"Heib","sequence":"additional","affiliation":[{"name":"Chair for Lightweight Systems, Saarland University, Campus E3 1, 66123 Saarbr\u00fccken, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Steven","family":"Quirin","sequence":"additional","affiliation":[{"name":"Chair for Lightweight Systems, Saarland University, Campus E3 1, 66123 Saarbr\u00fccken, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hans-Georg","family":"Herrmann","sequence":"additional","affiliation":[{"name":"Chair for Lightweight Systems, Saarland University, Campus E3 1, 66123 Saarbr\u00fccken, Germany"},{"name":"Fraunhofer Institute for Nondestructive Testing IZFP, Campus E3 1, 66123 Saarbr\u00fccken, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2020,7,29]]},"reference":[{"key":"ref_1","unstructured":"Backwell, E., Gambell, T., Marya, V., and Schmitz, C. (2017). Additive manufacturing: A long-term game changer for manufacturers. The Great Re-Make: Manufacturing for Modern Times, McKinsey & Company."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"10212","DOI":"10.1021\/acs.chemrev.7b00074","article-title":"Polymers for 3D Printing and Customized Additive Manufacturing","volume":"117","author":"Ligon","year":"2017","journal-title":"Chem. Rev."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1016\/j.promfg.2019.04.002","article-title":"Integrated Additive Product Development for Multi-Material Parts","volume":"33","author":"Kaspar","year":"2019","journal-title":"Procedia Manuf."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"19","DOI":"10.1016\/j.compstruct.2018.03.013","article-title":"Fracture analysis of a metal to CFRP hybrid with thermoplastic interlayers for interfacial stress relaxation using in situ thermography","volume":"193","author":"Summa","year":"2018","journal-title":"Compos. Struct."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"17","DOI":"10.1080\/14658011.2017.1399531","article-title":"Effect of the printing bed temperature on the adhesion of parts produced by fused filament fabrication","volume":"47","author":"Spoerk","year":"2017","journal-title":"Plast. Rubber Compos."},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Spoerk, M., Gonzalez-Gutierrez, J., Lichal, C., Cajner, H., Berger, G., Schuschnigg, S., Cardon, L., and Holzer, C. (2018). Optimisation of the Adhesion of Polypropylene-Based Materials during Extrusion-Based Additive Manufacturing. Polymers, 10.","DOI":"10.3390\/polym10050490"},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Habenicht, G., and Ahner, C. (2009). Applied Adhesive Bonding. A Practical Guide for Flawless Results, Wiley-VCH.","DOI":"10.1002\/9783527626458"},{"key":"ref_8","doi-asserted-by":"crossref","unstructured":"Habenicht, G. (2006). Kleben: Grundlagen, Technologien, Anwendungen, 5., Erw. und aktualisierte Aufl., Springer.","DOI":"10.1007\/3-540-31223-4"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"591","DOI":"10.1016\/j.cirp.2018.04.112","article-title":"Joining strength dependence on molding conditions and surface textures in blast-assisted metal-polymer direct joining","volume":"67","author":"Kajihara","year":"2018","journal-title":"Cirp Ann."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"870","DOI":"10.1002\/pen.10253","article-title":"Thermoplastic bonding to metals via injection molding for macro-composite manufacture","volume":"38","author":"Ramani","year":"1998","journal-title":"Polym. Eng. Sci."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"386","DOI":"10.1016\/j.jmatprotec.2017.06.034","article-title":"Enhancing the joining strength of injection-molded polymer-metal hybrids by rapid heating and cooling","volume":"249","author":"Li","year":"2017","journal-title":"J. Mater. Process. Technol."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"290","DOI":"10.1016\/j.ijadhadh.2018.02.003","article-title":"Influence of surface roughness on the shear strength of direct injection molded plastic-aluminum hybrid-parts","volume":"82","author":"Bonpain","year":"2018","journal-title":"Int. J. Adhes. Adhes."},{"key":"ref_13","unstructured":"Amancio-Filho, S.T., and Falck, R. (2016). Verfahren zum Herstellen eines Schichtf\u00f6rmigen Bauteils. (DE 10 2016 121 267 A1), Patent."},{"key":"ref_14","doi-asserted-by":"crossref","unstructured":"Falck, R., Dos Santos, J.F., and Amancio-Filho, S.T. (2019). Microstructure and Mechanical Performance of Additively Manufactured Aluminum 2024-T3\/Acrylonitrile Butadiene Styrene Hybrid Joints Using an AddJoining Technique. Materials, 12.","DOI":"10.3390\/ma12060864"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"211","DOI":"10.1016\/j.matlet.2018.01.021","article-title":"AddJoining: A novel additive manufacturing approach for layered metal-polymer hybrid structures","volume":"217","author":"Falck","year":"2018","journal-title":"Mater. Lett."},{"key":"ref_16","first-page":"100928","article-title":"Integrated laser-based powder bed fusion and fused filament fabrication for three-dimensional printing of hybrid metal\/polymer objects","volume":"31","author":"Chueh","year":"2020","journal-title":"Addit. Manuf."},{"key":"ref_17","first-page":"101135","article-title":"Production of polymer-metal hybrids using extrusion-based additive manufacturing and electrochemically treated aluminum","volume":"33","author":"Hertle","year":"2020","journal-title":"Addit. Manuf."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"167","DOI":"10.1016\/j.jmatprotec.2017.02.026","article-title":"Estimation of filament temperature and adhesion development in fused deposition techniques","volume":"245","author":"Costa","year":"2017","journal-title":"J. Mater. Process. Technol."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"6761","DOI":"10.1039\/C7SM00950J","article-title":"Weld formation during material extrusion additive manufacturing","volume":"13","author":"Seppala","year":"2017","journal-title":"Soft Matter"},{"key":"ref_20","first-page":"719","article-title":"Nozzle-integrated pre-deposition and post-deposition heating of previously deposited layers in polymer extrusion based additive manufacturing","volume":"28","author":"Ravoori","year":"2019","journal-title":"Addit. Manuf."},{"key":"ref_21","first-page":"71","article-title":"Infrared thermography of welding zones produced by polymer extrusion additive manufacturing","volume":"12","author":"Seppala","year":"2016","journal-title":"Addit. Manuf."},{"key":"ref_22","doi-asserted-by":"crossref","unstructured":"Ferraris, E., Zhang, J., and van Hooreweder, B. (2019). Thermography based in-process monitoring of Fused Filament Fabrication of polymeric parts. Cirp Ann.","DOI":"10.1016\/j.cirp.2019.04.123"},{"key":"ref_23","doi-asserted-by":"crossref","unstructured":"Bernhard, F. (2014). Strahlungstemperaturmessung. Handbuch der Technischen Temperaturmessung, Springer.","DOI":"10.1007\/978-3-642-24506-0"},{"key":"ref_24","doi-asserted-by":"crossref","unstructured":"Bernhard, F. (2014). Thermografie. Handbuch der Technischen Temperaturmessung, Springer.","DOI":"10.1007\/978-3-642-24506-0"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"321","DOI":"10.1108\/RPJ-02-2017-0026","article-title":"Predicting strength of additively manufactured thermoplastic polymer parts produced using material extrusion","volume":"24","author":"Bartolai","year":"2018","journal-title":"Rapid Prototyp. J."},{"key":"ref_26","doi-asserted-by":"crossref","unstructured":"Ostermann, F. (2014). Anwendungstechnologie Aluminium, Springer. [3rd ed.].","DOI":"10.1007\/978-3-662-43807-7"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"367","DOI":"10.1016\/j.addr.2016.06.012","article-title":"Physical and mechanical properties of PLA, and their functions in widespread applications\u2014A comprehensive review","volume":"107","author":"Farah","year":"2016","journal-title":"Adv. Drug Deliv. Rev."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"141","DOI":"10.1122\/1.5054648","article-title":"In-line rheological monitoring of fused deposition modeling","volume":"63","author":"Coogan","year":"2019","journal-title":"J. Rheol."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"655","DOI":"10.1122\/1.5093033","article-title":"Modeling of interlayer contact and contact pressure during fused filament fabrication","volume":"63","author":"Coogan","year":"2019","journal-title":"J. Rheol."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"1549","DOI":"10.1122\/1.5037687","article-title":"The importance of rheological behavior in the additive manufacturing technique material extrusion","volume":"62","author":"Mackay","year":"2018","journal-title":"J. Rheol."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"145","DOI":"10.1166\/jbmb.2015.1516","article-title":"Development of High Thermally Conductive and Electrically Insulative Polylactic Acid (PLA) and Hexagonal Boron Nitride (hBN) Composites for Electronic Packaging Applications","volume":"9","author":"Ghaffari","year":"2015","journal-title":"J. Biobased Mat. Bioenerg."},{"key":"ref_32","unstructured":"NatureWorks (2019, September 11). Ingeo Biopolymer 3D870 Technical Data Sheet. Available online: https:\/\/www.natureworksllc.com\/~\/media\/Files\/NatureWorks\/Technical-Documents\/Technical-Data-Sheets\/TechnicalDataSheet_3D870_monofilament_pdf.pdf?la=en."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"1352","DOI":"10.1021\/ma0706071","article-title":"Disorder-to-Order Phase Transition and Multiple Melting Behavior of Poly(l -lactide) Investigated by Simultaneous Measurements of WAXD and DSC","volume":"41","author":"Zhang","year":"2008","journal-title":"Macromolecules"},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"1885","DOI":"10.1007\/s10570-016-0914-1","article-title":"Shear rheology of polylactide (PLA)\u2013cellulose nanocrystal (CNC) nanocomposites","volume":"23","author":"Bagheriasl","year":"2016","journal-title":"Cellulose"},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"4400","DOI":"10.1021\/acsomega.8b00129","article-title":"Improving the Impact Strength and Heat Resistance of 3D Printed Models: Structure, Property, and Processing Correlationships during Fused Deposition Modeling (FDM) of Poly(Lactic Acid)","volume":"3","author":"Benwood","year":"2018","journal-title":"Acs Omega"},{"key":"ref_36","doi-asserted-by":"crossref","unstructured":"Kohlgr\u00fcber, K., and Bierdel, M. (2008). Rheological properties of polymer melts. Co-rotating Twin-screw Extruder: Fundamentals, Technology, and Applications, Hanser Gardner. Hanser.","DOI":"10.3139\/9783446433410.fm"},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"514","DOI":"10.1007\/BF01452999","article-title":"Thermal oxidative degradation of poly-lactic acid","volume":"1982","author":"Gupta","year":"1982","journal-title":"Colloid Polym. Sci."},{"key":"ref_38","unstructured":"Ebnesajjad, S. (2008). Adhesives Technology Handbook, William Andrew Pub. [2nd ed.]."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"41","DOI":"10.1080\/00218468008078903","article-title":"Dynamic Contact Angles of Viscous Liquids","volume":"11","author":"Welygan","year":"1980","journal-title":"J. Adhes."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"1063","DOI":"10.1088\/0143-0807\/30\/5\/014","article-title":"Newton\u2019s law of cooling revisited","volume":"30","author":"Vollmer","year":"2009","journal-title":"Eur. J. Phys."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"170","DOI":"10.1016\/S1526-6125(04)70071-7","article-title":"Modeling of Bond Formation Between Polymer Filaments in the Fused Deposition Modeling Process","volume":"6","author":"Bellehumeur","year":"2004","journal-title":"J. Manuf. Process."},{"key":"ref_42","doi-asserted-by":"crossref","unstructured":"Caminero, M.\u00c1., Chac\u00f3n, J.M., Garc\u00eda-Plaza, E., N\u00fa\u00f1ez, P.J., Reverte, J.M., and Becar, J.P. (2019). Additive Manufacturing of PLA-Based Composites Using Fused Filament Fabrication: Effect of Graphene Nanoplatelet Reinforcement on Mechanical Properties, Dimensional Accuracy and Texture. 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