Magnetic field orientation and flaw detectable.

Magnetic field orientation and flaw detectable. 





The type of magnetic field established is determined by the method used to magnetize the specimen. Being able to magnetize the part in two direction is important because the best detection of defects occurs when the lines of magnetic force are established at right angles to the longest dimensions of the defect. This orientation creates the largest disruption of the magnetic field within the part and the greatest flux leakage at the surface of the part. As can be seen in the image, if the magnetic field is parallel to the defect, the field will see little disruption and no flux leakage field will be produced.




An orientation of 45 to 90 degrees between the magnetic field and the defect is necessary to form an indication. Since defects may occur in various and unknown directions, each part is normally magnetized in two directions at right angles to each other. If the component below is considered, it is known that passing current through the part from end to end will establish a circular magnetic field that will be 90degrees to the direction of the current. Therefore, defects that have a significant dimension in the direction of the current (longitudinal defects)  should be detectable. Alternately, transverse -type defects will not be detectable with circular magnetization. 

Comments

Post a Comment

Popular posts from this blog

How to connect your Smartwatch to the phone

Image
Hello friends, today we are going to tell you how to connect your "Smart Phone to Phone Se kaise Hono Kare" If you are looking for then you will get right information here. Friends, in today's world where technology is growing, we all have become so busy with our lives that we cannot take care of our health. For such reasons, some commercial companies have introduced electronic devices such as Fitness Band and Smartwatch in the market to establish their market. Friends, with the help of these smart watches, you can see the changes in your body, such as: heart rate, SpO2, exercise records, and not only that, if your phone is lost, you can find it again. With the help of a smart watch. We will tell you that by connecting your smart watch to your Android phone, you can do many important things, such as: calls, messages, you can also start the camera, and you can do other things like with your smartwatch. Some situations are unknown to all of us. How To Connect Sm...
Yes

Angle beam transducers in ultrasonic testing.

Image
Angle beam transducers   :-Angle beam transducers and wedges are typically used to introduce a refrected shear wave into the test material. Transducer can be purchased in a variety of fixed angles or adjustable versions where the user determines the angles of incidence and refraction. In the fixed angle versions, the angle of refraction that is marked on the transducer is only accurate for a particular material,, which is usually steel. The angled sound path allows the sound beam to be reflected from the Blackwell to improve detectability of flaws in and around welded areas. They are also used to generate surface waves for use in detecting defects on the surface of component. Normal incident shear wave transducer: - are unique because they allow the introduction of shear waves directly into a test piece without the use of an angle beam wedge. Careful design has enabled manufacturing of transducers with minimal longitudinal wave contamination. The ratio of the longitudinal to sh...
Yes

Introduction of welding machine,

Image
Introduction of welding machine, The history of welding machines dates back to the 19th century. Here is a brief overview of the development and evolution of welding machines: 1).     Carbon Arc Welding: In the late 1800s, Sir Humphry Davy discovered the process of carbon arc welding. This process involved creating an electric arc between a carbon electrode and the metal to be welded, resulting in the fusion of the metals. 2).     Resistance Welding: In the early 20th century, resistance welding became popular. This technique used electric current and pressure to bond metal parts together. Spot welding, seam welding, and flash welding are common methods of resistance welding. 3).    Arc Welding: The invention of arc welding in the early 20th century brought a major breakthrough in the field. This process involved using an electric arc struck between an electrode and the metal workpiece to create the necessary heat for melting and fusin...
Yes