The experiments were carried out on a trawl net twine using a newly devised impact repeating apparatus.
The results obtained are as follows;
A definite direct tendency relative to the increase in the number of repeated impacts was not shown for such measured values as breaking strength, flexibility and breaking energy for 100 and 800 repeated impacts.
The elongation caused by repeated impact seems to increase with the increase of the number of repeated times and impact load.
Uneven values were observed more in netting twine composed of spun yarn than in multi-filament in the present experiments.
