Topics: force systems, stress, stress analysis, stress concentration, fits, limits, tolerances, fasteners, square key, flat key, pins, bolts, screw, rivets, steel washers, welding, brake selection, bending moment

Topics: Research Methods, ecology of research, Approaches to Research, research topics source, Nature of Research Problems, Research Background, academic research components, research objectives, Hypotheses, Research Questions, research design, Qualitative Research Designs, qualitative research methods, Quantitative Research Design Library/Desk Research, Survey, Experimental Designs, Statistical Data Collection, Statistical Tools, Documentation, Referencing, Modern Language Association, American Psychological Association, Observation, Hypotheses Testing, Theory Construction, New Hypothesis, Ex-Post Facto Research, Action Research, Historical Research, case studies