The science behind authenticating historic vehicles
Optical emission spectrometry: material analysis
Discover how optical emission spectrometry (OES) helps to authenticate and analyse historic vehicles. Learn more about the technology that helps collectors and engineers to ensure the originality of classic cars.
What is optical emission spectrometry?
Optical emission spectrometry (OES) is a scientific method used to determine the chemical composition of materials. By analysing the light emitted by a material, the elements it contains can be identified and quantified. This method is particularly useful in the examination of historic vehicles, as it enables almost non-destructive analysis and provides precise results relating to the material used and its age.
Optical emission spectrometry is a Physical method for elemental analysis of metals. A high-energy spark discharge brings the atoms on the metal surface into an excited state. These emit light - each wavelength stands for a specific chemical element.
A spectrometer measures this light and calculates the exact proportions of iron, copper, chromium, nickel or carbon, for example. The result: a clear statement on the composition of the component.
This technique is crucial for the authentication of materials in classic cars, as it can prove the originality (age) and provenance of the materials used.
Why is OES relevant to our work?
Material knowledge is crucial when analysing historic vehicles. Whether for frames, axles or engine components - OES helps us:
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Confirm original alloys
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later conversions can be recognised
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expose invisible repairs
📌 Example from practice:
In the case of an Alfa Romeo from 1937, OES was able to prove that the chassis was made from an alloy that corresponded exactly to the manufacturer's standard at the time - and not from a replacement part that was welded in later. Proof that had a significant impact on the collector's value.
Sometimes a material is worth a thousand words. When evaluating and certifying historic vehicles, it is not only what is visible that counts - but what is inside. The optical emission spectrometry (OES) gives us the opportunity to read materials at an atomic level.
It is a central tool in our work at Kukuk Engineers - precise, fast and reliable.
Advantages of optical emission spectrometry
Precise material analysis
OES offers high-precision analysis of material composition, which is essential for the authentication of historic vehicles.
Non-destructive testing
The method is virtually non-destructive and enables valuable classic cars to be examined on site without compromising their integrity.
Fast results
Optical emission spectrometry provides fast and reliable results that are invaluable to collectors and engineers.
Practical application examples
Our expertise in OES has been applied in various fields since 1989 to determine the authenticity and value of historic vehicles.
Classic car certification
We offer comprehensive certification services for classic cars to confirm their authenticity, originality, quality and value.
Material analysis
By analysing materials such as steel and aluminium, we can verify the historical accuracy of a vehicle.
Advice for collectors
Our experts offer collectors valuable insights and recommendations on how to care for and authenticate their vehicles.
Support with auctions
We support auction houses with detailed reports to prove the value and authenticity of the vehicles.
How the OES works
Optical emission spectrometry (OES) is a precise method for analysing materials that is carried out in several steps.
1
Sample preparation
The sample (location on the vehicle) is carefully cleaned and prepared to ensure accurate results.
2
Spectroscopic analysis
The sample is exposed to an electric arc or spark that produces the emission of light wavelengths that are unique for each element.
3
Data interpretation
The emitted spectra are analysed to determine the chemical composition of the sample. The results are then comprehensively analysed and interpreted.
Frequently asked questions about OES
Here you will find answers to frequently asked questions about optical emission spectrometry and its application in vehicle authentication.
What is optical emission spectrometry?
OES is an analytical method for determining the chemical composition of materials by analysing the emitted wavelengths of light.
Why is OES important for vehicle authentication?
OES makes it possible to verify the originality of materials, which is crucial for the authentication of historic vehicles.
How accurate is the OES analysis?
OES offers high accuracy and precision in determining the chemical composition of samples. The material and age can then be determined.
Which materials can be analysed with OES?
OES can be applied to a variety of materials, including metals, alloys and paints.
How long does an OES analysis take?
The duration of the analysis depends on the sample and the scope of the analysis, but usually takes a few hours. The analysis, on the other hand, takes a little longer and an initial rough assessment can be made on site.
Can OES be used for every type of vehicle?
Yes, OES can be applied to any type of vehicle to analyse its material composition.
Discover more about OES
OES is not an end in itself - but a tool that creates trust. In our daily work at Kukuk, science is behind originality. Because a material that speaks must also be understood.
Whether testing a pre-war model or a high-end investment vehicle: Optical emission spectrometry delivers hard facts - in seconds.
Are you interested in authenticating historic vehicles? Contact us at Kukuk Engineering to find out more about our services and the benefits of optical emission spectrometry. Our team is ready to assist you with expertise and experience.
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