The purpose of this study was to investigate the variables that contributed most to maximum throwing distance in the hammer throw event in track and field. A 41item survey instrument was developed to collect data regarding national level collegiate hammer throwers throughout the United States. Multiple regression analysis for hammer throw personal record (PR) yielded a significant model (r=0.81...

The motion of the striking point on the piano hammer was measured before and during string contact by means of an optical equipment. The measurements resolved the motion in two perpendicular components; in the striking direction (vertical), and in the string direction (horizontal). The influence of dynamic level and touch on the hammer motion was studied. Three different types of touch were eva...

This study aimed to prepare Cu-based coatings with excellent corrosion resistance by cold spraying. Cu, Zn, and Al particles different mass ratios were mechanically blended as the feedstock materials. The microstructure, element content, mechanical properties, of investigated. Results showed that all prepared presented a dense microstructure. In addition, thickness exceeded 290 μm, existence “h...

Several manufacturing processes are used to beneficially influence the surface and subsurface properties of manufactured parts. Different aspects such as topography or resulting residual stresses addressed using different processes. This paper presents first approach for pulsed mechanical treatment (PMST), a new process aiming combine mechanics in deep rolling shot hammer peening. The can gener...

Abstract The use of three artificial neural network (ANN)-based models for the prediction unconfined compressive strength (UCS) granite using non-destructive test indicators, namely pulse velocity, Schmidt hammer rebound number, and effective porosity, has been investigated in this study. For purpose, a sum 274 datasets was compiled used to train validate ANN including constructed Levenberg–Mar...

In many rock engineering projects, accurate identification of rock strength properties is very important. Uniaxial compressive strength is one of the most important features to describe the resistive behavior of rocks which is used as an important parameter in the design of structures especially underground openings. Determination of this parameter using direct methods, including uniaxial compr...

The determination of the load bearing capacity masonry in existing structures is not an easy task, even for experienced surveyors. For its assessment, it necessary to know compressive strength units and mortar. Relatively good destructive non-destructive methods were developed units. However, mortar currently closer a rough estimation rather than deterministic approach. All used are either comp...