Lee, Young, Reddish, Lough, and Clayton (1983) reported that the timing control of jumping and vertically punching a dropping ball exploits the inverse of the rate of change of optical expansion, tau(r). We raise a number of methodological and logical criticisms against their experiment and conclusions and attempt to rectify them by examining elbow joint angles only, in seated punchers, under b...

This paper presents an application of the SingleMinute Exchange of Die (SMED) methodology to a turret punching machine in an elevators company, in Portugal. The work was developed during five months, in the ambit of a master thesis in Industrial Engineering and Management. The Lean Production tool SMED was applied to reduce setup times in order to improve the production flexibility of the machi...

Strengthening of flat slab-column connections to resist imposed lateral drifts is often required for older reinforced concrete structures in which the slabs were typically designed gravity load only or have been less stringent requirements. The complex stress state around columns means that strong experimental evidence repair and strengthening techniques be adopted with confidence practice. Alt...