Experimental study of the simulated process of degradation of polycarbonate- and d,l-lactide-based polyurethane elastomers under conditions mimicking the physiological environment

2016 ◽  
Vol 125 ◽  
pp. 115-128 ◽  
Author(s):  
Milena Špírková ◽  
Magdalena Serkis ◽  
Rafał Poręba ◽  
Lud’ka Machová ◽  
Jiří Hodan ◽  
...  
Keyword(s):  
Experimental Study ◽  
Polyurethane Elastomers ◽  
Simulated Process

Experimental study of vibroinsulating properties of modern structural polyurethane

2019 ◽  
pp. 120-127
Author(s):  
S. N. Yakovlev ◽  
A. A. Chernysh
Keyword(s):  
Experimental Study ◽  
Absorption Coefficient ◽  
Energy Absorption ◽  
Experimental Research ◽  
Mechanical Engineering ◽  
Polyurethane Elastomer ◽  
Polyurethane Elastomers ◽  
Final Choice ◽  
Shock Absorbers ◽  
Two Parameters

Modern mechanical engineering often uses polyurethane elastomers as vibroinsulating material. It is difficult to choose the most perfect structural polyurethane among a large number of proposed materials for manufacturing shock absorbers. The article presents experimental research of vibroinsulating properties using two parameters out of five. Based on preliminary tests, an implicit preference is given to one of the three proposed materials. The energy absorption coefficient and the creep of the elastomer are chosen as criteria for evaluating the vibroinsulation properties of polyurethane elastomers. Final choice of polyurethane elastomer for shock absorbers manufacturing could be made if additional tests are carried out for studying three criteria.

Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

1995 ◽  
Vol 53 ◽  
pp. 636-637
Author(s):  
Norio Baba ◽  
Norihiko Ichise ◽  
Syunya Watanabe
Keyword(s):  
Experimental Study ◽  
Spherical Aberration ◽  
Incident Beam ◽  
Optical Parameters ◽  
Beam Tilting ◽  
Illumination Method ◽  
Restoration Method ◽  
Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

An Experimental Study of Some Properties of Stuttered Words

1962 ◽  
Vol 5 (4) ◽  
pp. 387-394 ◽  
Author(s):  
Bruce Quarrington ◽  
Jerome Conway ◽  
Nathan Siegel
Keyword(s):  
Experimental Study

Experimental study of total body washout employing extracorporeal circulation and hypothermia

1974 ◽  
Vol 126 (2) ◽  
pp. 243-248
Author(s):  
A WAKABAYASHI ◽  
T KUBO ◽  
K CHARNEY ◽  
Y NAKAMURA ◽  
J CONNOLLY
Keyword(s):  
Experimental Study ◽  
Extracorporeal Circulation ◽  
Total Body

Gastric Freezing: An Experimental Study

1963 ◽  
Vol 45 (3) ◽  
pp. 374-383 ◽  
Author(s):  
Donald C. McIlrath ◽  
George A. Hallenbeck ◽  
Hubert A. Allen ◽  
Charles V. Mann ◽  
Edward J. Baldes ◽  
...  
Keyword(s):  
Experimental Study
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