Resistance welding is an electrothermic process commonly used in Industry for joining sheet metal, particularly steel, in applications such as automobile bodies and chassis assemblies. The method is suitable for partial or total automation, and is very reliable. However, as with any process, problems can occur and inspection is therefore necessary. Although ultrasonic inspection of spot welds h...

The inspection of complex-shaped components can suffer from the fact that the area of interest can not be properly insonified due to restricted access. In such cases, mirrors can be applied to turn the ultrasonic beam onto the component’s surface. In this paper, the optimization of such a mirror is illustrated for a specific application in aero engine inspection. Its shape has been designed to ...

Recently, high-performance lightweight materials with outstanding mechanical properties have opened up their way to some sophisticated industrial applications. As one of these systems, aluminum matrix composites/nanocomposites (AMCs) offer an outstanding combination of relative density, hardness, wear resistance, and mechanical strength. Until now, several additive manufacturing methods have be...

Magnesium alloy, copper and other light alloys are widely used in aerospace, new energy vehicles, lightweight manufacturing fields due to their excellent mechanical properties, but the connection between has always been a challenge. Ultrasonic welding is an advanced technology that can realize high-strength heterogeneous alloys. In this study, ultrasonic AZ31B magnesium pure carried out. The fr...

Workers who perform routine welding tasks are potentially exposed to fume that may contain manganese. Manganese may cause respiratory problems and is implicated in causing the occurrence of Parkinson-like symptoms. In this study, a field colorimetric method for extracting and measuring manganese in welding fume was developed. The method uses ultrasonic extraction with an acidic hydrogen peroxid...

The ultrasonic infrared thermal wave method is a new nondestructive testing technique. It is remarkably sensitive and convenient for detection of small vertical cracks, such as fatigue cracks in metals. Pulses of ultrasonic launched by the ultrasonic emitter as heat source are excited into the sample, if there are some cracks in the material, they will be revealed through their heat generation,...

After carefully molding a beautiful product, nothing is worse than seeing it destroyed during assembly. Every joining process is capable of causing marking, flash, particulate, damage to appendages, or other aesthetic defects. However, with proper part design and processing, a finished weld can be imperceptible or even a cosmetic asset. The art to attractive bonding is specific to each process ...

The demand for joining dissimilar metals has exponentially increased due to the global concerns about climate change, especially electric vehicles in automotive industry. Ultrasonic welding (USW) surges as a very promising technique join metals, providing strength and conductivity, addition avoid metallurgical defects, such formation of intermetallic compounds, brittle phases porosities. Howeve...