Wolfgang Grellmann – författare

Reliable and meaningful methods of polymer testing are necessary to support the plastics industry, being essential for understanding material and part properties, and evaluating materials for a part design, with important implications for product safety as well as operating conditions and lifetime. This book covers all the most important testing methods, from long-established basic techniques to recent developments, including the latest polymer testing standards.By means of examples for the optimization of materials as well as for the evaluation of part properties, an insight into modern polymer testing and its interdisciplinary character is provided.Included in this third edition is an all-new chapter on the testing of polymer films; additionally, many small updates and corrections have been made throughout the book.Numerous tables and figures are included, providing structures and physico-chemical data. A special section for beginners is dedicated to guiding formulations and test methods. A relatively short section deals with development trends in Europe. Sustainability is a major theme, and it is demonstrated that PVC has a strong potential to develop into a fully sustainable material.Another section deals with the everyday problems in the processing of PVC, such as the formation of specks, photo-effects, and plate-out. Plate-out is a common problem in the processing of PVC but only relatively few publications cover it. The causes, influencing factors, and mechanisms are still poorly understood. This section, unique in the literature, provides assistance in the selection and dosage of raw materials to PVC processor, based on the influencing factors during processing.

This book covers the most recent advances in the deformation and fracture behaviour of polymer material. It provides deeper insight into related morphology–property correlations of thermoplastics, elastomers and polymer resins. Each chapter of this book gives a comprehensive review of state-of-the-art methods of materials testing and diagnostics, tailored for plastic pipes, films and adhesive systems as well as elastomeric components and others. The investigation of deformation and fracture behaviour using the experimental methods of fracture mechanics has been the subject of intense research during the last decade. In a systematic manner, modern aspects of fracture mechanics in the industrial application of polymers for bridging basic research and industrial development are illustrated by multifarious examples of innovative materials usage. This book will be of value to scientists, engineers and in polymer materials science.

This book covers the most recent advances in the deformation and fracture behaviour of polymer material. It provides deeper insight into related morphology–property correlations of thermoplastics, elastomers and polymer resins. Each chapter of this book gives a comprehensive review of state-of-the-art methods of materials testing and diagnostics, tailored for plastic pipes, films and adhesive systems as well as elastomeric components and others. The investigation of deformation and fracture behaviour using the experimental methods of fracture mechanics has been the subject of intense research during the last decade. In a systematic manner, modern aspects of fracture mechanics in the industrial application of polymers for bridging basic research and industrial development are illustrated by multifarious examples of innovative materials usage. This book will be of value to scientists, engineers and in polymer materials science.

The application of fracture mechanics to polymers and composites allows the quantitative description of the toughness behaviour by means of fracture mechan­ ics parameters and enables preventive failure analysis. In recent years this young scientific discipline has developed rapidly, and now the experimental results are looking for more applications in industrial practice. However, the practical appli­ cations of fracture mechanics parameters to structural-integrity assessment are severely restricted owing to their limited transferability from specimens to com­ ponents. Indeed, geometry-independent fracture mechanics parameters are very important for the reliable functioning of polymers and components in nearly all industrial application fields. These application fields include the polymer development, quality control, con­ struction and polymer-specific design of reliable components in the motor indus­ try, the electrical industry and the manufacture of household appliances, as well as applications in information technology and medical applications. The present status report on the deformation and fracture behaviour of polymer materials was composed on the basis of revised lectures presented at the Merse­ burg discussion conference entitled 'Deformation and Fracture Behaviour of Polymers' and additional single contributions. The editors and authors have tried hard to present information about the applied fracture mechanics of polymers and composites in the light of their current re­ search work.

A Zähigkeitscharakterisierung mit Hilfe bruchmechanischer Konzepte.- A 1 Stand und Entwicklungstendenzen.- Neue Entwicklungen bei der bruchmechanischen Zähigkeitsbewertung von Kunststoffen und Verbunden.- JTJ-Konzept und dissipative Energien am Riß.- A 2 Experimentelle Methoden.- Bruchmechanische Meßmethoden für Polymere.- Einfluß von Prüfkörpergeometrie und Beanspruchungsbedingungen auf das Rißwiderstandsverhalten von PVC und PP.- Prozedur zur Ermittlung des Rißwiderstandsverhaltens mit dem instrumentierten Kerbschlagbiegeversuch.- Experimentelle Methoden zur Charakterisierung des Bruchverhaltens von HDPE-Rohren.- Die mechanische Charakterisierung von Polymeren und verstärkten Polymeren - Experimentelle Probleme und theoretische Hintergründe.- A 3 Alternative Methoden.- Approximative Methoden zur Beschreibung des Rißwiderstandsverhaltens im instrumentierten Kerbschlagbiegeversuch.- Anwendung der Normalisierungsmethode zur Ermittlung von Rißwiderstandskurven an amorphen PVC-Werkstoffen.- Berechnung von J-R-Kurven aus Kraft-Durchbiegungs-Diagrammen auf Basis des Gelenkprütkörpers.- J-TJ- und ?-T?-Stabilitätsdiagramme als Grundlage einer alternativen Methode zur Ermittlung von Instabilitätswerten aus Rißwiderstandskurven.- B Morphologie-Eigenschafts-Korrelationen.- B 1 Homopolymerisate.- Übermolekulare Struktur und mechanische Eigenschaften von isotaktischem Polypropylen.- Bruchverhalten und Morphologie von HDPE-Werkstoffen.- Zähigkeits- und Relaxationsverhalten von PMMA, PS und PC.- Crazing in amorphen Polymeren - Entstehung und Wachstum fibrillärer Crazes in der Nähe der Glasübergangstemperatur.- Einfluß der Temperatur und der Feuchtigkeit auf das Zähigkeitsverhalten von Polyamid.- B 2 Blends.- Zusammenhang zwischen Bruchverhalten und Morphologie von PE/PP-Blends.- Einfluß von Modifikatorkonzentration und Prüftemperatur auf das Zähigkeitsverhalten von modifizierten Polyamiden.- Morphologie und Zähigkeit von PP/EPR-Blends.- B 3 Copolymerisate.- Anwendung bruchmechanischer Werkstoffkenngrößen zur Optimierung des Zähigkeitsverhaltens von polymeren Mehrphasensystemen mit PP-Matrix.- Bruchmechanische Zähigkeitsbewertung des Rißinitiierungs-und Rißausbreitungsverhaltens von Ethylen-Propylen-Random-Copolymerisaten.- Rißzähigkeitsverhalten von ABS-Werkstoffen.- ABS - Sprödbruch-Untersuchungen der Morphologie-Versagens-Beziehung.- C Hybride Methoden der Kunststoffprüfung und Kunststoffdiagnostik.- Neue Möglichkeiten der zerstörungsfreien Charakterisierung von Polymeren.- Ermittlung des lokalen Deformationsverhaltens von Kunststoffen mittels Laserextensometrie.- D Technologische Prüfverfahren.- Einsatzgrenzen von Kunststoffen und deren Verbunden unter Reibungs- und Verschleißbedingungen.- Modifizierung von Polymerwerkstoffen mit amorphem Kohlenstoff zur Optimierung des Reibungsverhaltens.- Mechanisches Schwingungsverhalten einer CFK-Verdichterschaufel.- E Biokompatible Werkstoffe und medizinische Implantate.- Polymere Werkstoffe in der orthopädischen Gelenkchirurgie.- Werkstoffparameter von funktionellen Prothesen im HNO-Bereich bei fortschreitender Degradation.- Mikrobielle Korrosion von pharyngo-trachealen Shuntventilen.- Werkstoff-und Deformationsverhalten von Stimmprothesen - Sensibilität mechanischer Prüfverfahren.- F Spezielle Werkstoffe.- Rißinitiierung, Verschleiß und molekulare Struktur von gefüllten Vulkanisaten.- Charakterisierung des Deformationsverhaltens von modifiziertem Polymerbeton.- G Einsatz-und Anwendungsgrenzen.- Der Einfluß des biaxialen Spannungszustandes auf die Werkstoffkennwertfunktionen nichtlinear-viskoelastischer Werkstoffe.- Mediale Beständigkeit von PP/GF-Verbunden.- Einfluß der medialen Auslagerung auf das Impactverhalten glasfaserverstärkter Kunststoffe.- Physikalische Alterung von Polypropylen.- Autorenindex.

The application of fracture mechanics to polymers and composites allows the quantitative description of the toughness behaviour by means of fracture mechan­ ics parameters and enables preventive failure analysis. In recent years this young scientific discipline has developed rapidly, and now the experimental results are looking for more applications in industrial practice. However, the practical appli­ cations of fracture mechanics parameters to structural-integrity assessment are severely restricted owing to their limited transferability from specimens to com­ ponents. Indeed, geometry-independent fracture mechanics parameters are very important for the reliable functioning of polymers and components in nearly all industrial application fields. These application fields include the polymer development, quality control, con­ struction and polymer-specific design of reliable components in the motor indus­ try, the electrical industry and the manufacture of household appliances, as well as applications in information technology and medical applications. The present status report on the deformation and fracture behaviour of polymer materials was composed on the basis of revised lectures presented at the Merse­ burg discussion conference entitled 'Deformation and Fracture Behaviour of Polymers' and additional single contributions. The editors and authors have tried hard to present information about the applied fracture mechanics of polymers and composites in the light of their current re­ search work.

Elastomers are found in many applications ranging from technology to daily life applications for example in tires, drive systems, sealings and print rollers. Dynamical operation conditions put extremely high demands on the performance and stability of these materials and their elastic and flow properties can be easily adjusted by simple manipulations on their elastic and viscous properties.However, the required service life suffers often from material damage as a result of wear processes such as abrasion and wear fatigue, mostly caused by crack formation and propagation.This book covers interdisciplinary research between physics, physical chemistry, material sciences and engineering of elastomers within the range from nanometres to millimetres and connects these aspects with the constitutive material properties. The different chapters describe reliable lifetime and durability predictions based on new fracture mechanical testing concepts and advanced material-theoretical methods which are finally implemented in the finite element method for structural simulations. The use of this approach allows a realistic description of complex geometrical and loading conditions which includes the peculiarities of the mechanical behaviour of elastomeric materials in detail. Furthermore, this approach demonstrates how multi-scale research concepts provide an ambitious interdisciplinary challenge at the interface between engineering and natural sciences.This book covers the interests of academic researchers, graduate students and professionals working in polymer science, rubber and tire technology and in materials science at the interface of academic and industrial research.

The sub volumes A of volume VIII/6 form a series of data collections and handbooks covering properties of polymer solids and polymer melts. The present volume forms the third part of it and compiles concepts and data concerning thermomechanical, mechanical and fracture-mechanical properties of pure, filled and reinforced thermoplastics, thermo sets and high-performance composites.

The application of fracture mechanics to polymers and composites allows the quantitative description of the toughness behaviour by means of fracture mechan­ ics parameters and enables preventive failure analysis. In recent years this young scientific discipline has developed rapidly, and now the experimental results are looking for more applications in industrial practice. However, the practical appli­ cations of fracture mechanics parameters to structural-integrity assessment are severely restricted owing to their limited transferability from specimens to com­ ponents. Indeed, geometry-independent fracture mechanics parameters are very important for the reliable functioning of polymers and components in nearly all industrial application fields. These application fields include the polymer development, quality control, con­ struction and polymer-specific design of reliable components in the motor indus­ try, the electrical industry and the manufacture of household appliances, as well as applications in information technology and medical applications. The present status report on the deformation and fracture behaviour of polymer materials was composed on the basis of revised lectures presented at the Merse­ burg discussion conference entitled ''Deformation and Fracture Behaviour of Polymers'' and additional single contributions. The editors and authors have tried hard to present information about the applied fracture mechanics of polymers and composites in the light of their current re­ search work.