Predicting the static modulus of elasticity in eastern cottonwood (Populus deltoides) using stress wave non-destructive testing in standing trees

2016 ◽  
Vol 74 (6) ◽  
pp. 885-892 ◽  
Author(s):  
Mehrab Madhoushi ◽  
Soheyla Daneshvar
Keyword(s):  
Stress Wave ◽  
Modulus Of Elasticity ◽  
Populus Deltoides ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Eastern Cottonwood ◽  
Static Modulus ◽  
Standing Trees ◽  
Static Modulus Of Elasticity ◽  
Non Destructive

scholarly journals Prediction of the Static Modulus of Elasticity Using Four non Destructive Testing

2014 ◽  
Vol 13 (1) ◽  
pp. 33-40 ◽  
Author(s):  
Hugo Luis Chávez-García ◽  
Elia Mercedes Alonso-Guzmán ◽  
Wilfrido Martínez-Molina ◽  
Mario Graff ◽  
J. C Arteaga-Arcos
Keyword(s):  
Modulus Of Elasticity ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Static Modulus ◽  
Static Modulus Of Elasticity ◽  
Non Destructive

Study on the Correlation between Mechanical Characteristics and Non-Destructive Testing of Stress Wave in Larch Logs

2012 ◽  
Vol 433-440 ◽  
pp. 2135-2141
Author(s):  
Ju Ying Luo ◽  
Xue Chun Yang
Keyword(s):  
Stress Wave ◽  
Linear Correlation ◽  
Modulus Of Elasticity ◽  
Dynamic Modulus ◽  
Testing Machine ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Dynamic Modulus Of Elasticity ◽  
Positive Linear Correlation ◽  
Non Destructive

The testing experiments to healthy larch logs samplings whose diameter scopes are in 5-12cm and the length respectively are 10cm and 30cm were conducted by using Arbotom stress wave testing instrument and universal mechanics testing machine. The relationships between dynamic modulus of elasticity of stress wave and MOE, between MOR and MOE were all studied in the larch logs samplings. The results indicated that, in the two larch logs samplings, the dynamic modulus of elasticity of stress wave had positive linear correlation with MOE. Moreover, MOR also had a good linear correlation with MOE.

Non-Destructive Testing for Concrete: Dynamic Modulus and Ultrasonic Velocity Measurements

2011 ◽  
Vol 243-249 ◽  
pp. 165-169 ◽  
Author(s):  
Iqbal Khan Mohammad
Keyword(s):  
Compressive Strength ◽  
Modulus Of Elasticity ◽  
Dynamic Modulus ◽  
Ultrasonic Pulse Velocity ◽  
Ultrasonic Pulse ◽  
Pulse Velocity ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Dynamic Modulus Of Elasticity ◽  
Non Destructive

Nondestructive testing (NDT) is a technique to determine the integrity of a material, component or structure. The commonly NDT methods used for the concrete are dynamic modulus of elasticity and ultrasonic pulse velocity. The dynamic modulus of elasticity of concrete is related to the structural stiffness and deformation process of concrete structures, and is highly sensitive to the cracking. The velocity of ultrasonic pulses travelling in a solid material depends on the density and elastic properties of that material. Non-destructive testing namely, dynamic modulus of elasticity and ultrasonic pulse velocity was measured for high strength concrete incorporating cementitious composites. Results of dynamic modulus of elasticity and ultrasonic pulse velocity are reported and their relationships with compressive strength are presented. It has been found that NDT is reasonably good and reliable tool to measure the property of concrete which also gives the fair indication of the compressive strength development.

Three Non-Destructive Methods for the Modulus of Elasticity of the Trachea

2004 ◽  
Author(s):  
V. Hermawan ◽  
A. M. Al-Jumaily ◽  
M. Fatemi
Keyword(s):  
Modulus Of Elasticity ◽  
Radial Strain ◽  
Propagation Path ◽  
Non Destructive Testing ◽  
Thin Cylindrical Shell ◽  
Destructive Testing ◽  
Pros And Cons ◽  
Testing Techniques ◽  
Non Destructive ◽  
Practical Recommendations

Three non-destructive testing techniques are developed and investigated to determine the Young’s modulus of elasticity of the trachea and the results are compared with the standard uniaxial state of stress method. These techniques are based on: (1) simulating the trachea as a pressurized vessel and deducing a special relationship between the pressure and the radial strain; (2) using two hydrophones and determining the variation in acoustic transmittance caused by the presence of the trachea in a propagation path within a water-bath; (3) considering the trachea as a thin cylindrical shell and determining the resonance radial vibration response. Discussion is presented to identify the “pros” and “cons” of each technique and final practical recommendations are made.

Research of On-Site Screening and Non-Destructive Testing for Damaged Wooden Components of the Long Corridor in Temple of Heaven

2020 ◽  
Vol 980 ◽  
pp. 321-332
Author(s):  
Xin Li ◽  
Wei Qian ◽  
Rui Xu ◽  
Li Hong Chang ◽  
Max Schubert
Keyword(s):  
Stress Wave ◽  
Resistance Testing ◽  
Non Destructive Testing ◽  
Comparison Analysis ◽  
Testing Methods ◽  
Destructive Testing ◽  
Micro Drilling ◽  
As Stress ◽  
Drilling Resistance ◽  
Non Destructive

Take the Long Corridor in Temple of Heaven as an example, some screening and testing process for its wooden components which have damaged was recommended. By pre-knocking survey, the wooden components which probably have damaged were screened out and as the important focus. Then, some non-destructive testing methods such as stress-wave testing and micro-drilling resistance testing were utilized. By the comparison, analysis and interaction correction for the testing images, the internal damaged situation of wooden components were obtained. Three typical types of wooden components were selected in this study, and some specific and suitable non-destructive testing methods which adapt to their position characteristic were discussed. Thus, it can give some useful suggestions and data supporting for the later repairing and management works.

Non-Destructive Testing of Glued Laminated Timber Beams with Use of Pilodyn 6J – Method of Spike

2016 ◽  
Vol 825 ◽  
pp. 23-26
Author(s):  
Pavel Klapálek ◽  
Lenka Melzerová
Keyword(s):  
Modulus Of Elasticity ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Glued Laminated Timber ◽  
Measurement Results ◽  
Non Destructive ◽  
Timber Beams ◽  
The Way

This article is focused on GLULAM (glued laminated timber) beams and determination of their properties by using non-destructive method. This text is mainly focused just on part of more complex research of glued laminated timber beams. This text is focused on non-destructive method, which is the method of spike that uses device called Pilodyn 6J for measurement. Results of this method are in form of Young ́s modulus of elasticity. This article will describe how the method of spike works, with basic description, describes the tested material and compare the results of testing. In the conclusion we discuss the results, make conclusions and describe the way of our further research of glued laminated timber beams.

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