scholarly journals Deterministically – Probabilistic Approach for Determining the Steels Elasticity Modules

2015 ◽  
Vol 45 (1) ◽  
pp. 99-106
Author(s):  
Alexander Popov ◽  
Galina Klitcheva
Keyword(s):  
Ultrasonic Testing ◽  
Probabilistic Approach ◽  
Structure And Properties ◽  
Significant Variability ◽  
Non Destructive Evaluation ◽  
Non Destructive ◽  
Elastic Characteristics

Abstract The known deterministic relationships to estimate the elastic characteristics of materials are not well accounted for significant variability of these parameters in solids. Therefore, it is given a probabilistic approach to determine the modules of elasticity, adopted to random values, which increases the accuracy of the obtained results. By an ultrasonic testing, a non-destructive evaluation of the investigated steels structure and properties has been made.

Laser-Ultrasonic Testing of the Structure and Properties of Concrete and Carbon Fiber-Reinforced Plastics

2016 ◽  
Vol 722 ◽  
pp. 267-272 ◽  
Author(s):  
Alexander N. Kravcov ◽  
Pavel Svoboda ◽  
Adam Konvalinka ◽  
Elena B. Cherepetskaya ◽  
Alexsander A. Karabutov ◽  
...  
Keyword(s):  
Ultrasonic Testing ◽  
Structure And Properties ◽  
Laser Ultrasonic ◽  
Testing Technique ◽  
Carbon Fiber Reinforced Plastics ◽  
Reinforced Plastics ◽  
Wave Velocities ◽  
Fiber Reinforced Plastics ◽  
Non Destructive ◽  
2D Images

This paper discusses the possibility of studying composite materials by non-destructive laser-ultrasonic testing technique. Concrete samples and carbon-epoxy composites were examined, defects located and elastic wave velocities measured. The internal structure of the samples was visualized in 2D images.

scholarly journals Laboratory Study on Non-Destructive Evaluation of Polyethylene Liquid Storage Tanks by Thermographic and Ultrasonic Methods

CivilEng ◽  
2021 ◽  
Vol 2 (4) ◽  
pp. 823-851
Author(s):  
Amir Behravan ◽  
Matthew M. deJong ◽  
Alexander S. Brand
Keyword(s):  
Ultrasonic Testing ◽  
Visual Inspection ◽  
Phased Array ◽  
Road Maintenance ◽  
Storage Tanks ◽  
Ultrasonic Methods ◽  
Liquid Storage ◽  
Non Destructive Evaluation ◽  
Deicing Chemicals ◽  
Non Destructive

High-density polyethylene (HDPE) above-ground storage tanks (AST) are used by highway agencies to store liquid deicing chemicals for the purpose of road maintenance in the winter. A sudden AST failure can cause significant economic and environmental impacts. While ASTs are routinely inspected to identify signs of aging and damage, current methods may not adequately capture all defects, particularly if they are subsurface or too small to be seen during visual inspection. Therefore, to improve the ability to identify potential durability issues with HDPE ASTs, additional non-destructive evaluation (NDE) techniques need to be considered and assessed for applicability. Specifically, this study investigates the efficiency of using infrared thermography (IRT) as a rapid method to simultaneously examine large areas of the tank exterior, which will be followed by closer inspections with conventional and phased array ultrasonic testing (UT) methods. Results show that IRT can help to detect defects that are shallow, specifically located within half of the tank’s wall thickness from the surface. UT has the ability to detect all defects at any depth. Moreover, phased array UT helps to identify stacked defects and characterize each defect more precisely than IRT.

scholarly journals Linear Array Ultrasonic Testing Of A Thick Concrete Specimens For Non-Destructive Evaluation

2017 ◽  
Author(s):  
Dwight A. Clayton ◽  
Lev Khazanovich ◽  
Mattia Zammerachi ◽  
N. Dianne Bull Ezell
Keyword(s):  
Ultrasonic Testing ◽  
Linear Array ◽  
Non Destructive Evaluation ◽  
Non Destructive

Advanced Ultrasonic Testing Technologies with Applications to Evaluation of Steel Bridge Welding - An Overview

2015 ◽  
Vol 727-728 ◽  
pp. 785-789 ◽  
Author(s):  
Zhi Bin Lin ◽  
Fardad Azarmi ◽  
Qusay Al-Kaseasbeh ◽  
Mohsen Azimi ◽  
Fei Yan
Keyword(s):  
Quality Control ◽  
Ultrasonic Testing ◽  
State Of The Art ◽  
Flaw Detection ◽  
Steel Bridges ◽  
The State ◽  
Steel Bridge ◽  
Non Destructive Evaluation ◽  
Non Destructive ◽  
The Way

Non-destructive evaluation (NDE) methods are widely accepted for quality control of welding in steel bridges. Recent development of advanced ultrasonic testing technologies enriched the categories of NDE methods used for steel bridges and more importantly these enhanced techniques provided more effective flaw detection and characterization. No guidelines, however, is available in existing bridge welding code for their more widespread applications to bridges. In this study, we overview the state-of-the-art advanced ultrasonic testing technologies in welding inspection. Benefits of the enhanced ultrasonic testing technologies are summarized, aiming to pave the way for deciding methods need for various steel bridge welding inspections.

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