Sökning: "Mechanical properties"

Visar resultat 46 - 50 av 2833 avhandlingar innehållade orden Mechanical properties.

  1. 46. Model Calibration of Nonlinear Mechanical Systems Using Multi-Harmonic Frequency Response Functions

    Författare :Yousheng Chen; Andreas Linderholt; Thomas Abrahamsson; Ahlin Kjell; Linnéuniversitetet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; finite element model calibration; multi-harmonic frequency response function; Fisher information matrix; nonlinear structural dynamics; identifiability; data informativeness; Maskinteknik; Mechanical Engineering;

    Sammanfattning : In industry, linear finite element models are commonly employed to represent global structural behavior. It is crucial that the computational models are able to accurately represent the structures’ behavior. This cannot always be achieved by the use of linear models. LÄS MER

  3. 47. Properties of chitosan and whey protein films blended with poly(e-caprolactone)

    Författare :Idoia Olabarrieta; KTH; []
    Nyckelord :Biodegradable polymers; Edible polymers; Chitosan; Whey protein; Poly e-caprolactone ; Food packaging; Oxygen permeability; Water vapour permeability; Physical properties; Optical properties; Mechanical properties;

    Sammanfattning : .... LÄS MER

  4. 48. Thermo-mechanical modelling of welding with experimental verification

    Författare :Mats Näsström; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Computer Aided Design; Datorstödd maskinkonstruktion;

    Sammanfattning : Residual stresses and deformations after welding were studied numerically and experimentally. The numerical simulations were performed using the finite element method. In the calculations a thermoelastoplastic material model was used. LÄS MER

  5. 49. Means to measure the aesthetic properties of wood

    Författare :Olof Broman; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wood Technology; Träteknik;

    Sammanfattning : Wood is a biological material with inherent aesthetic properties which can give the final product a competitive advantage over other materials. In this thesis, people’s feelings and preferences for Scots pine (Pinus sylvestris) wood surfaces have been examined. LÄS MER

  7. 50. X-ray measurement of properties of saw logs

    Författare :Johan Oja; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Träteknik; Wood Technology;

    Sammanfattning : A nondestructive method of measuring knot parameters for research purposes has been compared to alternative, destructive methods. The method is based on automatic analysis of CT-images. The image analysis algorithms were adjusted to and evaluated on Norway spruce. LÄS MER