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An ultrasonic thickness gauge is a measuring instrument for the non-destructive investigation of a material's thickness using ultrasonic waves. The usage of an ultrasonic thickness gauge for non-destructive testing to check material properties such as thickness measurement, is regular in all areas of industrial measurements.
Schematic view of a flow sensor. An ultrasonic flow meter is a type of flow meter that measures the velocity of a fluid with ultrasound to calculate volume flow. Using ultrasonic transducers, the flow meter can measure the average velocity along the path of an emitted beam of ultrasound, by averaging the difference in measured transit time between the pulses of ultrasound propagating into and ...
The first efforts to use ultrasonic testing to detect flaws in solid material occurred in the 1930s. [1] On May 27, 1940, U.S. researcher Dr. Floyd Firestone of the University of Michigan applies for a U.S. invention patent for the first practical ultrasonic testing method.
A procedure for ultrasonic testing is outlined in ASTM C597 - 09. [9] In India, till 2018 ultrasonic testing was conducted according to IS 13311-1992.From 2018, procedure and specification for Ultrasonic pulse velocity test is outlined in IS 516 Part 5:Non destructive testing of concrete Section 1:Ultrasonic Pulse Velocity Testing. This test ...
The result extended Pakistan’s miserable home record in tests to 10 consecutive matches without a win in 2 1/2 years. That's happened only once before, when Pakistan lost 11 straight at home ...
Until Bangladesh Liberation War in 1971, the Pakistani rupee was the currency of the country. After the independence of Bangladesh, the first Bangladeshi currency was issued on March 4, 1972. [1] The government currency was named taka, later "৳" was designated as the sign or symbol of Taka. The minimum unit of money fixed is one rupee.
The rupee was pegged to British Pound until 1982 when the government of General Zia-ul-Haq changed to a managed float. As a result, the rupee devalued by 38.5% between 1982–83 and 1987–88 and the cost of importing raw materials increased rapidly, causing pressure on Pakistani finances and damaging much of the industrial base.
The Bangladeshi taka is the currency of modern Bangladesh. It was officially introduced in 1972 by the Bangladesh Bank to replace the Pakistani rupee at par following the end of the Bangladesh Liberation War and is produced by Bangladesh's Security Printing Corporation. The Bangladeshi taka carries the symbols ৳ and Tk.
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