ALUMINIUM 2020 Logo
ALUMINIUM 2020 13th World Trade Fair & Conference
6 – 8 October 2020
Messe Düsseldorf, Germany

ALUMINIUM 2018 INSIGHTS

Modern Methods of Component Analysis

09 July 2018
Modern Methods of Component Analysis | Modern Methods of Component Analysis

Modern Methods of Component Analysis

With the development of innovative materials and their application-oriented properties non-destructive testing of components or entire assemblies is now gaining substantial ground.

Non-destructive is first choice

With the development of innovative materials and their application-oriented properties non-destructive testing of components or entire assemblies is now gaining substantial ground.

Completely new material combinations, composite solutions and the increasing industrialisation of additive manufacturing methods require material and component testing that allow manufacturers and customers to make assured quality assessments. Aluminium applications especially in automotive, aviation and aerospace or safety-critical applications presuppose absolutely reliable material testing; and for components from small-batch production or for one-off pieces non-destructive testing is the first choice today anyway. The big benefit here is that only really defective parts are weeded out rather than destroying expensive components.
Depending on the given requirement – technicians have some 20 processes at their disposal to detect irregularities or inhomogeneities in components, base materials or welded seams. These processes are broken down into mechanical, electrical and optical processes. The component size, composition and type of finishing can also play a role in the assessment.

Ultrasonic testing is considered a proven and low-cost process and is particularly suited for inspecting welded seams. Ultrasound travels a measurable distance at a specific speed, which depends on the material and the waves. This results in a defined position in the component, by means of which irregularities can be detected.

With X-ray or radiographic inspection, a projection image with different degrees of blackening can be displayed by measuring differences in density. The prerequisite for this is the permeability of the material to be measured. Materials have different densities and are penetrated to different degrees. Industrial computer tomography is already being used in many cases today, allowing three-dimensional representation and analysis of the components.

For magnetic particle testing a ferromagnetic material is magnetised. Field lines are formed which flow evenly and in parallel with the surface through the component. They can be visualized with a suitable magnetic powder. In the event of a material breakage or irregularity in the material, these field lines are disturbed, and this in turn becomes visible with the aid of the test equipment. This way even very small and fine irregularities can be detected.

Eddy current testing also uses magnetic field measurement. A magnetic field is generated with a coil, impurities or damage affect the measurement and can be detected by sensors.

Visual inspection is the proven inspection of a product for visually discernible defects or deficiencies. It forms an integral part of production and serves as part of a factory production control system (PCS) for quality assurance. Special aids and light cabins show defects on surfaces. Visual inspections can also be carried out on moving parts.

Also with the help of laser technology non-contact measurements can be carried out and integrated seamlessly and automatically into the production line. Modern measuring systems check strip thicknesses, contours, dimensions or surface qualities, for example, and can also influence process control in the production of aluminium components if required.

 


« to News-Summary


x Mail Book your stand now