One of the more important collapse modes for straight, combination, and extension ladders is base slide out; the top of the ladder slides down the support wall as the base slips away from it. Various fundamental models have been used to study this behavior. This paper revisits the analytical solutions associated with these models and describes their implications for the analysis, design, and testing of ladders.
Personal watercraft (PWC) are small, light, high-horsepower boats. They are quite capable of injuring their occupants. This condition is exacerbated by the levels of acceleration these machines achieve under normal operating conditions, their unique operating characteristics, the design of the controls, operator/passenger configurations, seat and handhold designs and regulations. This paper explores the ergonomic design package, machine and boat design, injury patterns, safety hazards, regulations and some other issues that surround the PWC.
This paper explores general concepts of machine guarding with emphasis on practical examples. Power transmission motions and their associated hazards are discussed, as is the safeguarding of hazards during machine operation and servicing.
The mechanical power press is used as an example of a hazardous machine for which various methods of guarding have been developed. This paper examines current safeguards and safeguarding requirements for the power press.
A survey of some common safeguarding devices is presented, with explanations on their application in various situations. Guarding methods for robotic equipment are reviewed. Finally, a risk assessment model is presented with an example of its application in ameliorating the hazards of industrial robots.
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