State two factors to be considered in the selection of materials for the manufacture of a safety crash barrier for a motorway. - Leaving Cert Engineering - Question a - 2016
Question a
State two factors to be considered in the selection of materials for the manufacture of a safety crash barrier for a motorway.
Worked Solution & Example Answer:State two factors to be considered in the selection of materials for the manufacture of a safety crash barrier for a motorway. - Leaving Cert Engineering - Question a - 2016
Step 1
Tensile Strength
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Answer
Tensile strength is critical as it determines the material's ability to withstand pulling forces without breaking. In the context of a crash barrier, materials must be able to absorb and distribute the force of impact effectively, ensuring the safety of both vehicles and occupants.
Step 2
Impact Resistance
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Answer
Impact resistance is another essential factor. The material should be capable of withstanding sudden shocks from collisions. A high impact resistance will reduce the likelihood of failure during an accident, thus enhancing overall safety.
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