Results 91 to 100 of about 226,851 (192)

EFFECT OF BORIC ACID TREATMENT ON DECAY RESISTANCE AND MECHANICAL PROPERTIES OF POPLAR WOOD

BioResources, 2010
This study was performed to determine the effect of boric acid treatment upon the decay resistance and mechanical properties of poplar wood. Test specimens were prepared from poplar wood (Populus nigra L.) to meet ASTM D 143-94 and BS 838:1961 ...
Seyyed Khalil Hosseini Hashemi, Ahmad Jahan Latibari, Habibolah Khademi-Eslam, Reza Faraji Alamuti   +3 more
doaj  

Comparative measurements of Hardness Scales for Establishing the Hardness Standard of Slovenia

, 2002
A commercial hardness testing machine was provided to represent a hardness reference standard in Slovenia. In order to evaluate how accurate the hardness scales realised with this machine could be, the main influence factors contributing to the ...
POLZIN T, GERMAK, ALESSANDRO FRANCO LIDIA, STIBLER A, HERRMANN K   +3 more
core  

Reliability Analysis of Brinell Hardness Results for Aged Alumix321/SiC Composites

, 2019
Aluminum/SiC composites are widely employed in the automotive industry. Aluminum composites can be produced by hot pressing which forms a final product with a low porosity level and a denser structure. Homogeneous distribution of reinforcement particles,
Çömez N., Çivi C., Gül C., Durmuş H.   +3 more
core   +1 more source

Tetris with Few Piece Types [PDF]

We prove NP-hardness and #P-hardness of Tetris clearing (clearing an initial board using a given sequence of pieces) with the Super Rotation System (SRS), even when the pieces are limited to any two of the seven Tetris piece types.
Li, Jeffery, MIT Hardness Group, Hall, Holden, Demaine, Erik D.   +3 more
core   +1 more source

Assessment of measurement error in optical measurement of indentation geometry for Brinell and Vickers hardness tests

This study investigates the influence of indentation boundary definition on the measurement of Brinell and Vickers hardness. Current hardness standards prescribe optical determination of indentation size but do not define a unique physical location ...
Michele Tunesi, Febo Menelao, Cihan Kuzu, Giacomo Maculotti   +3 more
core   +1 more source

INVESTIGATION OF THE RATIO BETWEEN THE DYNAMIC AND STATIC HARDNESS OF METALS

Весці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2017
Problems of measurement of hardness by the dynamic indentation method are discussed. It is shown that an excess of dynamic hardness over static one can be described by the coefficient, which is a function of material properties and test conditions.In ...
V. A. Rudnitsky, A. P. Kren, G. A. Lantsman   +2 more
doaj  

Development and characterization of sustainable epoxy resin composites reinforced with palm kernel shell particulate and sisal fiber

Discover Applied Sciences
This study explores the development and characterization of epoxy resin composites reinforced with palm kernel shell (PKS) particulate and sisal fibers, aiming to create sustainable and high-performance materials.
A. A. Ojo, O. Awogbemi, K. A. Olanipekun
doaj   +1 more source

Metrological Characterization of Optical Measuring System for Hardness Indenters

, 2002
The verification of the geometry of Rockwell indenters has been widely studied in the past and, at the present, it is one of the most important tasks (in the uncertainty budget of hardness measurements) in discussion in many international organizations ...
ORIGLIA C., AFFRI R, Desogus S., Perteghella D., DESOGUS S, GERMAK, ALESSANDRO FRANCO LIDIA, Affri R., PERTEGHELLA D, Barbato G., BARBATO G   +9 more
core  

Effect of infill parameters and thermal annealing on the mechanical behavior of FDM 3D-printed polymer. [PDF]

Sci Rep
Nassar A, Abouseriaa GE, Alshorbagy A, Megahed M, Nassar E.   +4 more
europepmc   +1 more source

Multi-Source Fatigue Fracture of 2Cr13 Martensitic Stainless Steel Compressor Blades: The Critical Role of Surface Integrity in Marine Engineering Reliability. [PDF]

Materials (Basel)
Gao Y, Dong H, Lv C, Li Y, Zhou L, Song Y.   +5 more
europepmc   +1 more source