Practical and relevant competence ready to apply in an industrial setting is of crucial importance for University Engineering Education (UEE). However, what is considered as industrial relevant knowledge and skills are changing in an increasing pace and the gap between the research front and application in industry is decreasing. Within manufacturing industry, engineers must be able to jointly optimize the design and operation of manufacturing systems and products, transferring newest research, knowledge, and technology into the business at fast pace. Continuous Engineering Education (CEE) commonly involves development of theoretical skills together with the practical work in a company setting. In this paper, learning activities comprising both CEE and UEE students are studied. By mixing students from the two groups potential benefits could be achieved within each group. The purpose with the paper is to describe how learning activities integrating CEE and UEE can be achieved to strengthen the CDIO goals as well as exploring the benefits and challenges related to the mixed student group. Learning activities combining the student groups were studied in 4 CEE courses. Several types of learning activities gathering the student groups were identified including project work in industrial settings, lecture discussions, and project presentation seminars. Challenges identified related to e.g., the differences in background knowledge and skills in the areas affecting the design of project works as well as practical factors such as scheduling.

For the last seven years a successful cooperation between courses in product design and industrial design has been running at the School of Engineering at Jönköping University (JTH), Sweden. The concept of fusing separate courses with different domains of knowledge into one project is of course well known by most teachers, but this course takes this form of education one step further. This paper will describe the experience of coaching over 90 design-build-test projects going through the steps design, build, test but also the steps of fail and learn.

Several types of dynamic tests are carried out at SP Swedish National Testing and Research Institute. The tests considered in this paper, which are all simulated with FE-calculations, are as follows: a drop test of cask filled with water, a tennis racket/ball test, a test of a full face protector for hockey players and an impact test of a simplified bumper. To obtain a high-quality verification of the FE-results high-speed video recording of the test sequence is done in all four cases. Parameter studies are done regarding velocity and drop height. The FE-models are built up in the commercial software ABAQUS and I-deas, and are all solved numerically with ABAQUS/Explicit. The material models used in the FE-calculations include linear elastic, elastic-plastic with non-linear hardening, hyperelastic and linear hydrodynamic behavior. Different types of tests are carried out on material specimens in order to determine the material parameters used in the FE-models.

The mesomechanics behavior of a polycrystalline microstructure subjected to creep and constant strain rate loadings is investigated. The analysis is based on a Voronoi polygonization strategy for the generation of grains, that are bonded to each other via interfaces along the grain boundaries. A new constitutive model is proposed for the rate-dependent debonding along these interfaces, whereby damage is kinetically coupled to viscoplastic slip and dilatation. The paper may be viewed as generalizing the rate-independent model used in Cannmo et al. (1995).

A constitutive model is introduced for material interfaces. The model is based on damage coupled to plastic slip and dilatation, and can describe the successive degradation and failure of an interface. The main application of the interface model is in the context of a mesomechanics analysis of a polycrystalline microstructure which may consist of two phases. FE-calculations are carried out for a unit cell of microstructure. A sensitivity analysis is carried out for possible variation of the interfacial parameters. Localization and shear bands are detected in the analytically predicted range.

The mesomechanics behavior of a polycrystalline microstructure subjected to creep and constant strain rate loadings is investigated. The analysis is based on a Voronoi polygonization strategy for the generation of grains, that are bonded to each other via interfaces along the grain boundaries. A new constitutive model is proposed for the rate-dependent debonding along these interfaces, whereby damage is kinetically coupled to viscoplastic slip and dilatation. The paper may be viewed as generalizing the rate-independent model used in Cannmo et al. (1995).

The mesomechanical behavior of a polycrystalline microstructure subjected to monotonic and cyclic loadings is investigated. The analysis is based on a Voronoi polygonization strategy for generation of grains embedded in a contiguous matrix. The main emphasis is to investigate the interaction between the microconstituents and the failure processes along grain boundaries. A rational interface theory based on damage development coupled to inelastic slip and dilatation is developed. The theory uses the interface width as a constitutive parameter, which regularizes the theory of LEMAITRE [1992], that is restricted to perfect bond between grain and matrix. In a series of FE-analyses parameter variations were performed. The unit cell size (as compared to the average grain diameter), the grain-matrix area ratio, the interface width and constitutive parameters. It appears that the composite behavior can be designed as brittle or ductile solely depending on the strength and rate of damage development in the interfaces. A localization band was detected, and its orientation is in the range that is predicted within continuum theory