scholarly journals EVALUATION OF STRUCTURAL PERFORMANCE OF PREFABRICATED MUD-SHEAR WALL USING STATIC AND DYNAMIC TESTS AND DAMAGE ESTIMATION BY ULTRASONIC MEASUREMENT METHOD

2013 ◽  
Vol 78 (690) ◽  
pp. 1469-1476
Author(s):  
Takehiro WAKITA ◽  
Akihisa KITAMORI ◽  
Kiho JUNG ◽  
Takuro MORI ◽  
Kohei KOMATSU ◽  
...  
Keyword(s):  
Measurement Method ◽  
Shear Wall ◽  
Ultrasonic Measurement ◽  
Structural Performance ◽  
Damage Estimation ◽  
Dynamic Tests ◽  
Static And Dynamic Tests

DISCUSSION. STATIC AND DYNAMIC TESTS ON A SHEAR WALL STRUCTURE.

1972 ◽  
Vol 53 (3) ◽  
pp. 659-660
Author(s):  
AW IRWIN ◽  
WK TSO
Keyword(s):  
Shear Wall ◽  
Wall Structure ◽  
Dynamic Tests ◽  
Static And Dynamic Tests

The effect of the indenter elasticity on the Hertzian fracture of brittle materials

1973 ◽  
Vol 334 (1596) ◽  
pp. 95-117 ◽  
Keyword(s):  
Fracture Stress ◽  
Opposite Effect ◽  
Test Material ◽  
Test Surface ◽  
Dynamic Tests ◽  
Frictional Forces ◽  
Consistent Increase ◽  
Static And Dynamic Tests ◽  
Ring Crack ◽  
Ring Cracks

A spherical indenter loaded statically or dynamically into contact with the surface of a brittle material produces a well-defined ring crack. This phenomenon, when interpreted by the Hertz theory of elastic contact, provides a convenient test for the strength of the material. If the elastic modulus of the indenter is different from that of the test material, e. g. a steel indenter in contact with a glass surface, frictional forces are brought into play at the interface which modify the Hertz distribution of contact stress. This effect has been examined both theo­retically and experimentally. An indenter which is more rigid than the test surface is shown to lead to an apparent increase in fracture strength of the material, a less rigid indenter has the opposite effect. Static and dynamic tests of plate glass showed a consistent increase in apparent fracture stress of about 50 % using spherical steel indenters compared with glass indenters. This increase agrees well with the influence of friction upon the Hertzian stress calculated theoretically. The average radius of the ring cracks produced by steel indenters was observed to be greater than that produced by glass indenters, an effect of friction also predicted by the theory. Secondary ring cracks of smaller radius have frequently been observed during unloading of a steel indenter. These were not found when a glass indenter was used and an explanation is suggested in terms of the frictional effect which arises from a difference in elasticity between the indenter and the test surface.

Evaluation Method of U-Bolt Energy Absorption

2009 ◽  
Author(s):  
Eiji Shirai ◽  
Tetsuya Zaitsu ◽  
Kazutoyo Ikeda ◽  
Toshiaki Yoshii ◽  
Masami Kondo ◽  
...  
Keyword(s):  
Energy Absorption ◽  
Evaluation Method ◽  
Design Procedure ◽  
Piping System ◽  
Design Technique ◽  
Dynamic Tests ◽  
Key Issues ◽  
Static And Dynamic Tests ◽  
Force Displacement ◽  
Rigid Design

At domestic PWR plants in Japan, one of the major key issues is earthquake-proof safety [1–3]. Recently, a design procedure using energy absorption, not conventional rigid design, was authorized according to revised review guidelines for aseismic design (JEAC4601). Therefore, we focused on the design technique that utilizes energy absorption effects to reduce the seismic responses of the piping system with U-Bolt, by the static and dynamic tests of simplified piping model supported by U-Bolt. The force-displacement characteristics and a fatigue diagram were obtained by the tests.

Inspection and Model Experiment of a Damaged Arch Bridge

2007 ◽  
Vol 340-341 ◽  
pp. 223-228
Author(s):  
Ying Fang Fan ◽  
Zhi Qiang Hu ◽  
Jing Zhou
Keyword(s):  
Model Experiment ◽  
Dynamic Test ◽  
Dynamic Responses ◽  
Dynamic Tests ◽  
Arch Bridge ◽  
Mechanical Responses ◽  
Organic Glasses ◽  
Bridge Model ◽  
Static And Dynamic Tests ◽  
Good Agreement

The structural behavior of an old six-span reinforced concrete arch bridge, which has been in service for about 40 years, is investigated. Field monitoring (inclusive of test of material property, static and dynamic test of the bridge) was conducted, static and dynamic responses of the bridge are obtained. Based on the primitive bridge, a scaled one-span bridge model was fabricated by organic-glasses. Both the static and dynamic tests were executed on the bridge model in the laboratory. Since the arch rib is the crucial member for the arch bridge, 7 notches were cut on both arch ribs of the bridge model to simulate different damages of the arch rib. Mechanical responses of the bridge with different damages on the arch ribs were achieved. FEM analyses were preformed on the bridge as well. Numerical results show good agreement with the experimental results.

Load capacity assessment of “Antonio Dovali Jaime” bridge using static and dynamic tests

2008 ◽  
pp. 85-85
Author(s):  
V Robles ◽  
M Ruiz-Sandoval ◽  
J Téllez ◽  
F Burgos ◽  
O Ortiz ◽  
...  
Keyword(s):  
Load Capacity ◽  
Capacity Assessment ◽  
Dynamic Tests ◽  
Static And Dynamic Tests

scholarly journals DIAGNOSIS OF MUD SHEAR WALL BY ULTRASONIC MEASUREMENT AS A NONDESTRUCTIVE METHOD

2012 ◽  
Vol 18 (40) ◽  
pp. 895-900
Author(s):  
Kiho JUNG ◽  
Akihisa KITAMORI ◽  
Kohei KOMATSU ◽  
Takehiro WAKITA ◽  
Yasuo KATAOKA
Keyword(s):  
Shear Wall ◽  
Nondestructive Method ◽  
Ultrasonic Measurement

Measurement of the Elastic Moduli of Structural Adhesives by a Resonant Bar Technique

1976 ◽  
Vol 18 (3) ◽  
pp. 149-158 ◽  
Author(s):  
R. D. Adams ◽  
J. Coppendale
Keyword(s):  
Thin Film ◽  
Elastic Moduli ◽  
Dynamic Tests ◽  
Structural Adhesives ◽  
Young’S Moduli ◽  
Epoxy Adhesives ◽  
Dynamic Torsion ◽  
Static And Dynamic Tests

A method of measuring the dynamic torsion and Young's moduli of a thin film of adhesive is described. The accuracy of the technique and its suitability for structural adhesives is discussed. Values of modulus obtained using this method are compared with values obtained from static and dynamic tests on bulk specimens of three epoxy adhesives.

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