PCTE Industrial

  Do you have any idea about any testing we can perform without object destruction? There is one such technique called non-destructive testing method which we can use. It is ultrasonic testing which is the best to detect flaws and defects without damaging the object. This test is one of the best to check for any corrosion or defects.  You can avoid part failure or destruction of the entire asset by using it periodically. As a result, you can find its application in the various industries. What is Ultrasonic testing? Ultrasonic testing is a non-destructive testing method that uses sound waves to detect thickness, cracks and defects in components and materials. For example, this method is effective for determining the pipe thickness and wall thickness. What is the working principle of Ultrasonic testing? Ultrasonic testing uses a   piezoelectric transducer that transmit and receive ultrasonic waves. It is the basic form of a pulse-receiver and oscilloscope display. The tr...

  Different industries perform various testing techniques to infer details like identifying product flaws, measuring material thickness, detecting metals, and more. Many significant decisions related to production depend on this information. Hence, they take it very seriously. However, most industrial experts opt for non-destructive techniques like eddy current testing as they are safe and reliable.  What is eddy current testing? This technique is ideal for testing conductive materials with the help of the electromagnetic induction principle. The magnetic field is built around the material under investigation that oscillates to develop the alternating current into the coil that induces current into the specimen. The change in conductivity of the material due to the induction of eddy currents allows the experts to interpret the data and identify defects. For example, it will help know the thickness, check for flaws inside the metal and other condition information. Advant...

A coating thickness gauge, also known as paint thickness gauge or paint meter is used to measure thickness of the dry film. Dry film thickness is the most complicated thickness measurement in the entire coating industry because of its impact on the quality, coating process, and cost. Such measurements can be used to evaluate the expected life of the coating, the appearance, and the performance of the product. The measurement further ensures the compliance of the product with all the international standards. A paint thickness gauge uses different principles and mechanisms, and the ultrasonic principle is one of them. This technique is used for measuring the thickness of the paint on all the non-metal substrates like fiberglass and plastic. The probe of the instrument comprises an ultrasonic transducer that works by sending a pulse throughout the coating. This pulse then reflects from the substrate to the transducer and is further converted into a high-frequency electric signal. It is t...

Ultrasonic testing is a method used for determining the thickness of a structure with the help of sound waves. These sound waves are of high frequency, and this method is a reliable non-destructive method used in the power generation industry. There is no need to cut the test piece or use any chemical that might deteriorate it. The sound waves travel through the surface of even sturdy metals and help determine the thickness.   How does Ultrasonic Testing work? High-frequency sound waves that are way beyond the limit of the human ear get induced in this non-destructive testing technique. The test is performed under the supervision of an expert only. They can do the setup with proper requirement standards. Devices are used to induce the sound waves into the material in question. These sound waves can penetrate through any surface except for paper or wooden products. After passing through the surface, the sound wave is reflected when hitting the boundary and is returned to th...

An ultrasonic thickness gaugeis one of the most popular industrial non-destructive testing (NDT) tools. It measuresthe thickness of material when only one side is accessible. It functions non-destructively, using ultrasonic waves to detect changes in the material. Before getting in the detail ofdifferent ways to use an ultrasonic thickness gauge , it is necessary to understand how these gauges work. A dual-element transducer consists of two crystals. In this gauge, the ultrasonic waves sent from one crystal create a 'V' pattern by hitting the material's back wall and reaching the other crystal. The gauge measures the time taken for the ultrasonic pulse to travel to and forth. Taking variables like the speed of the pulse, material, and any potential acoustic barriers, it calculates the wall's thickness. A single element transducer uses only one crystal to send and receive the pulse. Here are the three ways to use an ultrasonic thickness gauge:       ...

  Eddy current is a type of electric current that moves quickly in a circular motion, often producing a downward spiraling action in bodies that conduct electricity and heat. Since these actions remind one of a whirlpools in a small, narrow river, hence their name. Commercial enterprises mostly use non-destructive approaches to evaluate metals. Eddy current testing is a popular non-destructive method to check electrically conductive goods. It is good to know the characteristics of Eddy current testing, if you want to use it to evaluate the materials or samples non-destructively. 1-    Analyse metals without physical contact When determining the electrical conductivity in a metal, learn that analysis with eddy currents does not involve any physical contact between the metal specimen and the sensor. 2-    Can identify cracks The interplay between a magnetic field source and a metal specimen is what introduces eddy current in the metal sample. When re...

A coating thickness gauge, also known as a paint thickness gauge is an important quality assurance tool for galvanizing, anodizing and applying a zinc coating to all kinds of metallic surfaces. Simultaneously, this instrument is also used to measure the overall paint thickness and uniformity on the products like cars, where its role is to reveal the repainted spots, check the hidden damages, and expose all the undisclosed accidents. Using the information provided by a paint thickness gauge, one can determine the actual condition and the value of a used car. A paint thickness gauge is used as an intelligent and precise tool that could measure the thickness of the paint coating or plating on a surface and provide accurate results. These surfaces could be metallic or non-metallic. The use of this tool is extensively widespread on both these surfaces. One may also explore different kinds of gauges if they want to measure the thickness on other kinds of surfaces and materials. A paint t...

  Hardness tests assess the resistance a raw material subject to permanent deformation by penetration of another hard material. It evaluates the material properties, such as strength, ductility and provide useful information to the users whether a material or material treatment is suitable for the purpose required. From a manufacturing or maintenance viewpoint, hardness is of great importance given the fact that resistance to deterioration through the medium of friction or erosion (by water vapour, greasy liquid, and water) escalate with hardness. Hardness is generally calculated using three fundamental categories of hardness estimations, scratch, indentation, and rebound. Inside each hardness estimation type, there are customized measurement scales. Indentation hardness calculates the resistance of a specimen (of a raw material) to permanent material distortion owing to a continuous compression load from a sharpened item. In a Rockwell hardness test , the hardness of the r...

  While testing the material's, hardness will not give any direct measurement on the performance-related characteristics. It provides important clues about the wear resistance, strength, and other properties. The  Rockwell hardness test   method is one of the most common and general methods used for testing the bulk hardness of metals and polymers substances and materials. The method is quite simple to use and is also quite affordable for measuring the properties of materials directly. The Rockwell scale is based on the indentation hardness (the hardness to deformation) of a material. The test involves measurement of the penetration depth of a given intender under a significant/large load and a minor load. The depth of the indentation measured is converted to a value on the Rockwell Hardness Scale. The Rockwell Conversion Charts are used to find out the corresponding hardness and its measurement. Benefits of the Rockwell Hardness Test Rockwell hardness test  is a...

The underlying principle in most generators and electric motors would be magnetism. This is the force that is responsible for managing a wide range of eddy current instruments too. Eddy current is useful because it can cover large surface areas within a short time. It is identified as one of the quickest ways of measuring thicknesses, and even the impact heat has on various equipment. Also,  eddy current testing doesn’t need any coupling liquids. This makes it easy to use eddy current for checking conductivity and hardness in metals. However, it is important to note that the use of eddy current testing   is limited to materials that can conduct electric energy. Thus, this form of testing cannot be used on liquids.  In some interesting situations, ultrasonic testing is executed with the help of an eddy current. Both of these methods complement one another. The ability of ultrasonic waves to penetrate deep surfaces, and the quick surface testing property of eddy cur...

Ultrasonic sensors have evolved drastically in the past few years. Today, these devices are used in a range of applications like measuring the distance between two objects. The sensor works with the help of ultrasonic sound waves. The sound waves are carefully converted into electrical energy. When compared to audible sound waves, UV waves tend to travel at a faster pace. This means human ears are not capable of hearing these sounds. An ultrasonic sensor has two important components, the receiver and the transmitter. The transmitter controls the amount of sound that is emitted by the piezoelectric crystals. While, the receiver encounters the sound which is transmitted towards the target. To compute the distance between the source and target object, the time required for the sound to reach is utilized. The total time required is nothing but two times the distance, divided by the speed of sound (343 meters/second).  Now, here are a few interesting facts about the ultrasonic sensor. ...

  Asset integrity is a critical area of concern in industrial applications and factories. Two main factors that contribute towards compromising the reliability and the integrity of assets are – heat and chemical reactions. Heat exchangers start to deteriorate after a while as the expansion and contraction of the tubes inside the heat exchanger start to erode them. Also, these tubes rest against steel support plates, and after some time, through the passage of fluids at high speed through the tubes, there is circumferential cracking in the tubes. These result in the wear down of the asset. Similarly, chemical reactions can damage the tubes and the support plates, creating holes through the tubes.  Eddy current testing  is one of the commonly used non-destructive testing methods included in asset integrity management programs. Reasons for using this testing method are many:  - It is a fast method with instant results - Eddy current testing is a cheap and affo...

Asset integrity is a critical area of concern in industrial applications and factories. Two main factors that contribute towards compromising the reliability and the integrity of assets are – heat and chemical reactions. Heat exchangers start to deteriorate after a while as the expansion and contraction of the tubes inside the heat exchanger start to erode them. Also, these tubes rest against steel support plates, and after some time, through the passage of fluids at high speed through the tubes, there is circumferential cracking in the tubes. These result in the wear down of the asset. Similarly, chemical reactions can damage the tubes and the support plates, creating holes through the tubes.  Eddy current testing  is one of the commonly used non-destructive testing methods included in asset integrity management programs. Reasons for using this testing method are many:  - It is a fast method with instant results - Eddy current testing is a cheap and affordable ...

Ultrasonic testing is a non-destructive testing method that is used commonly for -        Detecting cracks, defects and faults in a test piece; -        Measuring the dimensions of a test piece; -        Understanding the nature or character of a material; How is the test carried out? The testing unit or system consists of a receiver, transducer, and a display unit. The receiver or pulse is the unit that produces electrical pulses. The transducer then produces ultrasonic energy in high frequency. This sound energy or wave passes through the test piece. If the material has no-fault, it will behave as a standard piece – however, when there is a crack, fault, or break in between, the wave is intercepted by this fault line from where the wave reflects. This reflected wave or echo is then converted by the transducer into an electrical signal. This electrical signal gets displayed on the s...

UV light torches are used for typically seeing things that are invisible to the normal eyes. From detecting rodents in warehouses to detecting forgery with currency notes, from identification of oil leakages to detecting gemstone and minerals, arson detection, inspection of crime scenes and artwork, there are multiple uses of UV lights. These are some of innovative features of UV torch lights : ●    The wavelength of UV light is measured in nm or nanometers . ●    UV lights of only specific wavelengths can induce enough fluorescence – an aspect that is the most important feature that most applications of the UV torch light uses. ●    UV light that is around the range of 360 nm has the most forceful fluorescent glow. ●    The watts or power of the UV torch light will indicate the strength of the light. ●   UV torch lights can be powered by AA or AAA battery cells. These torches are good for occasional use. ●   ...