Technische Universiteit Eindhoven

Aluminium alloys used in the aircraft industry are seldomly used in the built environment. Why? a These alloys cannot be extruded. b These alloys are sensitive to corrosion and they are difficult to weld. c These alloys are too strong for the built environment; one can hardly deform them. d These alloys act as electric conductors in case of lightning (thunderstorms). They can be safely used in aircraft because of the Faraday cage, but not so in buildings.

he ratio between the Youngs modulus and the material strength of structural aluminium alloys is relatively low. This has consequences for: a The deformations, the strength of connections and the dynamic behaviour (resonance frequency). Aluminium scores high on these aspects. b The deformations, resistance against buckling, and the dynamic behaviour (resonance frequency). Aluminium scores low on these aspects. c The deformations and the dynamic behaviour (resonance frequency). Aluminium scores low on these aspects. d None of the other answers are correct

Could you answer the following questions in the field of human factors? Please take into account information from the book: "Designing for People: An Introduction to Human Factors Engineering" by Lee et al. The questions: Questions exam: - Difference slip and lapse - Name the five factors of usability testing - Four stages of automation - Why use automation - Difference between affordance and signifier - How can you make an effective warning label - What is it called to put yourself in a disabled persons shoes - Name 3 needs and 2 adjacent psychological concepts that explain video game enjoyment (Ryan, Rigby, Dzybyski) - What are 5 factors that determine voluntary task switching - What do you add to an alerting display - What is a design defect - What are environmental stressors o =Physical stressor o Noise o Motion / Vibration o Thermal stress / Heat o Lighting o Air quality - What is a media equation - What are interaction styles - What is a chording keyboard - Name [universal] design principles o Equitable use o Flexibility in use o Simple and intuitive o Perceptible information o Tolerance for error o Low physical effort o Size and space for approach and use - What is the dimension of emotion - What is the difference between complacency/distrust/overtrust/out-of-the-loop behaviour - What is workload and timeline analysis - Who is Lillian Gilbreth?

For a floor structure in 'Category A: dwellings' is given: - dimensions: 38 x 235 (bxh in mm) - center to center distance: 610 mm - strength class C24 'sawn timber' - climate class 1 - weight of roof, including beam is G(k) = 1.15 kN/m^2 - variable load is Q(k) = 1.75 + 0.50 = 2.25 kN/m^2 - load duration class: medium-long - factor variable load = 0.3 - span: L = 3.65 m Determine the final displacement and do a unity check

Which objective do the two timber certification institutions FSC and PEFC have in common? a) maintaining the integrity and diversity of forests b) ensuring the durability of the wood c) combating clear-cut and stimulating natural growth d) ensuring sustainable forest management

Consider two columns, one of aluminium (alu) and one of steel. They have the same dimensions and the same yield stress. What are the ratios between the elastic critical (Euler) buckling loads F(cr,alu)/F(cr,steel) and the cross sectional (plastic) resistances F(pl,alu)/F(pl,steel) (the latter not considering buckling)?