ULTRASONIC TESTING (UT) USEFUL FORMULAE 1. Velocity of Ultrasonic Waves in a medium (V) = f x l OR W here f = Number of cycles per second is called frequency. Measured in ‘Hertz’. Abbreviated as ‘Hz’. One Hertz is equivalent to One cycle per second l = Distance covered in one cycle is wavelength V= Velocity of Ultrasonic wave inside the medium in ‘mm/s’ 2. A coustic Impedance (Z) = V x r W here: Z= Acoustic Impedance r= D ensity V= Velocity 3. R eflection Coefficient
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How One Moth Species Can Jam Bats’ Sonar Systems In the article How One Moth Species Can Jam Bats’ Sonar Systems by Joseph Stromberg‚ we learn about a species of tiger moth native to the Arizona Desert that can detect and jam bats’ sonar systems. The moth’s unique ability allows them to evade bats successfully. Bertholdia trigona‚ are a species of tiger moth that can jam bats sonar “ability to ‘see’ through echolocation”. A group of wildlife biologist students led by colleague Aaron Corcoran
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ABSTRACT Ultrasonic range finder using 8051 A simple ultrasonic range finder using 8051 microcontroller is presented in this project. This ultrasonic rangefinder can measure distances up to 2.5 meters at an accuracy of 1 centi meter. AT89s51 microcontroller and the ultrasonic transducer module HC-SR04 forms the basis of this circuit. The ultrasonic module sends a signal to the object‚ then picks up its echo and outputs a wave form whose time period is proportional to the distance. The microcontroller
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Module 9 Non-conventional machining Version 2 ME‚ IIT Kharagpur Lesson 36 Ultrasonic Machining (USM) Version 2 ME‚ IIT Kharagpur Instructional Objectives i. ii. iii. iv. Describe the basic mechanism of material removal in USM Identify the process parameters of USM Identify the machining characteristics of USM Analyse the effect of process parameters on material removal rate (MRR) v. Develop mathematical model relating MRR with USM parameters vi. Draw variation in MRR with different process
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The University of Adelaide Assignment AMP1 – Ultrasonic range finder Introduction The aim for this assignment is to write a program for the ultrasonic range finder. It is similar to the sonar system‚ which emit a time-limited ultrasonic wave and receive the echo of the signal. The delay between transmission and reception of the Signal can be used as a measure for the distance at which the object is found. The process shows below. Overview The microcontroller program needs to implement
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Taylor Bass Mrs. O’kon English II 4th period 11 February 2013 Diagnostic Sonographer There are hundreds and thousands of jobs in America. Rarely do two people want to be the exact same thing‚ some will become fire fighters‚ others will be lawyers‚ and some might choose the medical path way. Becoming a sonographer is not an easy task‚ it requires having a collage education‚ and it requires many different skills‚ are also many different types of sonography‚ but the pay you get becoming a sonographer
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There are many uses for sound in the world today. Performers can take advantage from a better understanding of sound‚ architects needs to understand sound to design effective auditoriums‚ and many new types of technology apply sound recognition. Another use of sound is in the area of science called Nondestructive testing‚ or NDT. Ultrasonic testing (UT) has been practiced for many decades. Initial rapid developments in instrumentation encouraged by the technological advances from the 1950’s continue
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Radiologic Technologist: Time passed and a mother desperate for not knowing what’s going on with her baby’s body. Immediately she was thinking about it and she takes her baby to the hospital‚ she asked for a doctor and the nurse first asked the mother what was her trouble and the mother explain to the nurse everything that was happening with the head of the baby and the nurse recommended the mother to talk to a radiologic technologist. She finally did an appoinment and she take her baby with a
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SYNOPSIS Subject :- ULTRASONIC RADAR Group Members :- INTRODUCTION Radar is a system that uses electromagnetic waves to identify the range‚ altitude‚ direction‚ or speed of both moving and fixed objects such as aircraft‚ ships‚ motor vehicles‚ weather formations and terrain. The term RADAR was coined in 1941 as an acronym for Radio Detection and Ranging. The term has since entered the English language as a standard word‚ radar‚ losing the capitalization in the process. Radar was originally
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Name: Mr Dev Abrasion Peeling Description of process: In abrasion peeling‚ the material to be peeled is fed onto carborundum rollers or fed into a rotating bowl‚ which is then lined with carborundum. The abrasive carborundum surface removes the skin‚ which is then washed away with a copious supply of water. The process is normally carried out at ambient temperature. Advantages: This process results in reduced energy consumption‚ while the peel can be recovered and used as animal feed
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