Christian C. Roth

TL;DR: In this article, a split Hopkinson pressure bar testing system is used in conjunction with a load inversion device to perform the high strain rate tension experiments on flat smooth, notched and central hole tensile specimens extracted from advanced high strength steel sheets.

TL;DR: In this paper, a new in-plane specimen with two parallel gage sections is proposed to determine the strain to fracture for approximately zero stress triaxiality and the Lode angle parameter remains constant while the specimen is loaded all the way to fracture.

TL;DR: Complementation tests in an Escherichia coli recombinant containing all Pseudomonas putida GPo1 genes necessary for growth on alkanes except Rd 2 (AlkG) and sequence comparisons showed that the Alk-Rds can be divided in AlkG1- and AlKG2-type Rds, which are able to replace the GPo 1 Rd 2 in n-octane hydroxylation.

TL;DR: In this article, a modified Johnson-Cook plasticity model is developed to capture the observed unconventional effect of the strain rate and temperature on the hardening response for DP800 steel.

TL;DR: In this article, a parametric study evaluating more than 600 distinct specimen geometries is performed in an attempt to identify a universal specimen geometry for all types of materials, but no single geometry can be found for different hardening behaviors, it seems to be necessary to use several distinct geometry to cover all levels of ductility, and the authors recommend testing three different types of specimen per material, reporting the highest measured strain among all specimens as strain to fracture for simple shear.