Explain working of ultrasonic system for concrete elements, Civil Engineering

Assignment Help:

Explain the working of Ultrasonic System for Concrete Elements?

Ultrasonic methods can be used underwater for overall assessment of the strength of concrete based on sound velocity measurements through a large volume of structural element. It can also be used to detect and locate flaws and discontinuity in concrete elements. It is, however, recommended that the underwater ultrasonic system be used primarily for checking the uniformity of concrete from one test location to another in a given structure. If the data consistently indicates poor or very poor quality concrete, core samples must be taken and standard compression test performed to confirm the results.

The system consists of two different underwater transducer holders for direct and indirect sound velocity measurements. An umbilical cable connects either the direct or indirect transducer holder to the topside DAU. The DAU contains most of the signal conditioning electronics and data acquisition system. In ultrasonic testing, an electric pulse is generated in the test instrument and transmitted to a transducer that converts the electric pulse into mechanical vibration. The vibrations are transmitted into the object being tested. A portion of this energy is reflected to the receiving transducer, where it is reconverted to electrical energy and sent to the DAU. Sound velocity is calculated by measuring the time required for transmission of sound wave over a known path length. Table 5.2 presents suggested condition grading for concrete based on pulse velocity measurements.

Table: Criterion for concrete quality grading

1766_Ultrasonic System for Concrete Elements.png


Related Discussions:- Explain working of ultrasonic system for concrete elements

Continuous flow systems, Continuous Flow Systems: Transport by road, r...

Continuous Flow Systems: Transport by road, rail, air or ships takes place in vehicles which move along a path at intervals. As against this, continuous flow systems are those

Building material, how to calculate the specific gravity and water absorpti...

how to calculate the specific gravity and water absorption of coarse aggregate

Brick masonry., an opening of width 3m and height 2.7 in a brick masonary h...

an opening of width 3m and height 2.7 in a brick masonary has to be provided with door cum window. plan, elevation, section and 2 joining details

Determine the loss of fluid energy, Determine the loss of fluid energy as 3...

Determine the loss of fluid energy as 310 gallons per minute (gpm) of water flows through 1,000 ft of 4 inch, schedule-40 welded and seamless steel pipe. The fluid temperature is 5

Calculate the daily standard production rate of equipment, Calculate the Da...

Calculate the Daily Standard Production Rate of Equipment An excavator with a bucket capacity of 3-yd 3 has a standard operating cycle time of 40 seconds. The daily standard p

Explain mild and high-yield steel, High-yield steel vs. mild steel as road ...

High-yield steel vs. mild steel as road reinforcement High yield steel is the preferred material for the reinforcement of concrete carriageway due to the subsequent reasons:

Concreat, m25 mix water cement ratio

m25 mix water cement ratio

Explain remote sensing technique, Q. Explain Remote sensing technique? ...

Q. Explain Remote sensing technique? Remote sensing is a science or an art of obtaining the information about an object, area or a phenomenon through analysis of data acquired

RISE AND FALL METHOD, WHAT IS THE PURPOSE OF USING THE RISE AND FALL METHOD...

WHAT IS THE PURPOSE OF USING THE RISE AND FALL METHOD IN LEVELLING?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd