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The journal International Shipbuilding Progress (ISP) was founded in 1954. Each year four issues appear (in April, July, September and December). Publications submitted to ISP should describe scientific work of high international standards, advancing subjects related to the field of Marine Technology, such as:
- Concept development
- General design of ships and offshore objects
- Ship and offshore structural design
- Hydro-mechanics and -dynamics
- Maritime engineering and machinery systems
- Production processes of all types of ships and other objects intended for marine use
- Production technology and material science
- Shipping science, economics, and all directly related subjects
- Ship operations
- Offshore and ocean engineering in relation to the marine environment
- Marine safety
- Efficiency, lifecycle, and environment
- Ice-related aspects for ships and offshore objects.
The contents of the papers may be of a fundamental or of an applied scientific nature and must be of the highest novelty and rigor.
Authors: Archer, S.
Article Type: Research Article
Abstract: The author outlines the principal causes of reduced life in marine oil engine crankshafts and cites typical illustrative examples from service. Reported defects for the various types of crankshaft construction, taken over a ten-year period from January, 1953, are classified and certain conclusions drawn as to relative reliability. Some metallurgical factors are discussed and their influence illustrated Computer methods are used for evaluating crankshaft torque variations at any section along the shaft from gas pressure diagrams, including the effect of added torsional vibration stresses. A programme is applied to a large modern six-throw two-stroke cycle crankshaft of Rule size …with a view to assessing the factors of safety against fatigue failure wider combined bending and twisting with and without torsional vibration, taking into account stress concentration and notch sensitivity, together with an estimate of the effects of misalignment and axial vibration. Show more
Citation: International Shipbuilding Progress, vol. 11, no. 123, pp. 483-505, 1964
Article Type: Research Article
Abstract: Forced oscillation tests are carried out with a segmented shipmodel to investigate the distribution of the hydrodynamic forces along the hull for heaving and pitching motions. The vertical forces on each of the seven sections of the shipmodel are measured as a function of forward speed and frequency. By using the in-phase and quadrature components of these forces, an analysis is made of their distribution along the length of the shipmodel. The experimental results are compared with the results of a simple strip theory, taking into account the effect of forward speed. The comparison shows a satisfactory …agreement between theory and experiment. Show more
Citation: International Shipbuilding Progress, vol. 11, no. 123, pp. 506-522, 1964
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