Essential Work of Fracture: Bestimmung des gültigen Ligamentbereiches mittels digitaler 3D-Bildkorrelation
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Johannes Heyn
Kurzfassung
Die Methode der Essential Work of Fracture ist ein Konzept der Fließbruchmechanik und eignet sich hervorragend zur Werkstoffoptimierung von duktilen Kunststoffen. Sie zeichnet sich, unter Beachtung gewisser Restriktionen, durch eine relativ einfache experimentelle Durchführbarkeit und Ergebnisinterpretation aus. Speziell die Gewährleistung des ebenen Spannungszustands, eine Grundvoraussetzung zur Anwendung dieser Methode, wird maßgeblich durch den gewählten Ligamentbereich der Prüfkörper beeinflusst. Mit der digitalen 3D-Bildkorrelation wird ein Verfahren vorgestellt, mit dem es möglich ist, sowohl die vollkommene Plastifizierung des Ligamentbereiches zu überprüfen als auch die minimal zulässige Ligamentuntergrenze zu definieren und zu überprüfen. Durch die mit digitaler 3D-Bildkorrelation unterstützte Werkstoffuntersuchung mit der Methode der Essential Work of Fracture ist es möglich, die Genauigkeit und die Verlässlichkeit der Ergebnisse zu steigern.
Abstract
The method of the essential work of fracture is part of the area of post yield fracture mechanics and is used for material optimization of ductile materials. Considering certain requirements, the method is very easy to handle and to evaluate. Especially safeguarding a plane stress condition is a major requirement, which is mainly influenced by the ligament range applied of the specimens. With the help of 3D digital image correlation a new procedure is introduced to verify both the plasticization of the ligament area before crack propagation as well as the lower valid ligament boundary limits. Therefore, material investigations by 3D digital image correlation in combination with the method of essential work of fracture could increase the accuracy and reliability of the results.
Literatur
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© 2018, Carl Hanser Verlag, München
Artikel in diesem Heft
- Inhalt/Contents
- Contents
- Fachbeiträge/Technical Contributions
- Compression testing of additively manufactured continuous carbon fiber-reinforced sandwich structures
- Microstructure and mechanical properties of nano-carbon reinforced Cu-based powder metallurgy friction materials produced by hot isostatic pressing
- Thermo-mechanical testing of TiO2 functional coatings using friction stir processing
- Ternary melt blend based on poly (lactic acid)/chitosan and cloisite 30B: A study of microstructural, thermo-mechanical and barrier properties
- Untersuchungen zur verlässlichen Messung der Härte nach dem UCI – Verfahren (Ultrasonic Contact Impedance)
- Electrochemical impedance spectroscopy of sand of varied particle size and water content using the three-electrode system
- Recycling of LM25 aluminum alloy scraps
- Mechanical fracture characterization of adhesive interfaces: Introducing a new concept for evaluating adhesive quality
- Effect of welding processes on mechanical and microstructural properties of S275 structural steel joints
- Essential Work of Fracture: Bestimmung des gültigen Ligamentbereiches mittels digitaler 3D-Bildkorrelation
- Synthesis, properties and EDM behavior of 10 wt.-% ZrB2 reinforced AA7178 matrix composites
- Solid particle erosion wear behavior of severe plastically deformed AA7075 alloys
- Performance of coated and uncoated carbide/cermet cutting tools during turning
- Assessment of soft materials for anthropomorphic soft robotic fingertips
- Application of the grey based Taguchi method and Deform-3D for optimizing multiple responses in turning of Inconel 718
Artikel in diesem Heft
- Inhalt/Contents
- Contents
- Fachbeiträge/Technical Contributions
- Compression testing of additively manufactured continuous carbon fiber-reinforced sandwich structures
- Microstructure and mechanical properties of nano-carbon reinforced Cu-based powder metallurgy friction materials produced by hot isostatic pressing
- Thermo-mechanical testing of TiO2 functional coatings using friction stir processing
- Ternary melt blend based on poly (lactic acid)/chitosan and cloisite 30B: A study of microstructural, thermo-mechanical and barrier properties
- Untersuchungen zur verlässlichen Messung der Härte nach dem UCI – Verfahren (Ultrasonic Contact Impedance)
- Electrochemical impedance spectroscopy of sand of varied particle size and water content using the three-electrode system
- Recycling of LM25 aluminum alloy scraps
- Mechanical fracture characterization of adhesive interfaces: Introducing a new concept for evaluating adhesive quality
- Effect of welding processes on mechanical and microstructural properties of S275 structural steel joints
- Essential Work of Fracture: Bestimmung des gültigen Ligamentbereiches mittels digitaler 3D-Bildkorrelation
- Synthesis, properties and EDM behavior of 10 wt.-% ZrB2 reinforced AA7178 matrix composites
- Solid particle erosion wear behavior of severe plastically deformed AA7075 alloys
- Performance of coated and uncoated carbide/cermet cutting tools during turning
- Assessment of soft materials for anthropomorphic soft robotic fingertips
- Application of the grey based Taguchi method and Deform-3D for optimizing multiple responses in turning of Inconel 718
