Method for Punching Holes in Brittle Sheet Materials. Modeling of Punching Operation and Basic Experiments.

[Human factors in card punching operation].

Manufacturing Features in Cutting Shapes and Punching Holes in Sheet Metal

By examining sheet metal parts it is rather evident that each sheet metal shape has its own manufacturing procedure. There are several manufacturing devices behind each procedure. This means that each shape can be divided into manufacturing features, which consist of shapes of sheet metal and their manufacturing methods. When creating rules and structures for manufacturing features, it is possi...

Meniscal shear stress for punching.

AIM Experimental determination of the shear stress for punching meniscal tissue. METHODS Meniscectomy (surgical treatment of a lesion of one of the menisci) is the most frequently performed arthroscopic procedure. The performance of a meniscectomy is not optimal with the currently available instruments. To design new instruments, the punching force of meniscal tissue is an important parameter...

Double-punching PMBL

Success stories in looking for effective strategies against cancer often have their roots in pathology. In case of primary mediastinal B-cell lymphoma (PMBL), this was likely the recognition as a distinct subtype of diffuse large B-cell lymphoma (DLBCL) in the early 80s [1, 2]. Initially a controversial entity, over the last 30 years, it has become clear that PMBL differs in pathogenesis, clini...

Strength of Footing with Punching Shear Preventers

The punching shear failure often governs the strength of the footing-to-column connection. The punching shear failure is an undesirable failure mode, since it results in a brittle failure of the footing. In this study, a new method to increase the strength and ductility of the footing was proposed by inserting the punching shear preventers (PSPs) into the footing. The validation and effectivene...