Company: G.N.R. ANALYTICAL INSTRUMENTS GROUP
G.N.R. - X-ray diffractometer (XRD)
X-ray diffraction
X-ray diffraction (XRD), is the diffraction of X-rays from ordered structures such as crystals or quasicrystals. In principle, X-rays exhibit the same diffraction phenomena as light and all other electromagnetic waves. X-ray diffraction is used in materials physics, crystallography, chemistry and biochemistry to analyse the structure of crystals, known as X-ray diffraction. For example, the results of X-ray scattering played an important role in analysing the structure of DNA. The devices used for this were originally X-ray cameras that recorded diffraction images on standard X-ray films; today, X-ray diffractometers with counting tubes, area detectors or similar are predominantly used. (Wikipedia, 24.1.2024)
StressX for residual stress analyses
StressX is an X-ray diffractometer for residual stress analysis that enables non-destructive testing of samples. The head of the difffratometer is mounted on an anthropomorphic 6-axis robot, which enables samples of any size and shape to be analysed.
StressX can be mounted either in a closed cabin suitable for laboratory analyses or on a four-wheeled trolley for on-site analyses.
- Non-destructive residual stress analysis
- Mounting on a 6-axis robot for flexible sample analysis
- Can be used in closed laboratories or on a four-wheeled trolley on site
- Precise quantification of residual stresses for fatigue damage prevention
- Unique synergy between compact X-ray diffractometer and 6-axis robot
- 6-axis robot with high precision (20 μm) and versatile measuring range
SpiderX for mobile residual stress measurements
SpiderX is the new portable residual stress analyser from GNR. It has been designed with a focus on exceptional portability, lightness, ease of set-up, excellent performance and negligible X-ray emissions.
The result is a compact and intelligent device based on a low-power X-ray tube and a fast and highly efficient detector, the combination of which ensures accurate and fast measurements.
- Portable, lightweight, easy to set up and powerful
- Based on an X-ray tube with low power consumption and efficient detector
- Precise measurements with negligible X-ray emissions
- Goniometer head for determining the stress state in polycrystalline materials
- Compact housing with supplied transport bag for safe storage
- Ideal solution for portable and precise residual stress analyses
Measurement of the tension state of pretension cables and tension ropes on bridges by X-ray diffraction. An innovative portable XRD.
The review of the operational status of civil infrastructure is a topic of considerable current importance and the assessment of the actual safety status of the infrastructure requires the review of several risk factors. Several test methods are currently used on the basis of existing technologies.
One of the most important verifications is the correspondence between the design value of the prestressing of tendons and the actual situation after years of operation.
X-ray diffraction is a widely used method in the field of mechanics for assessing the stress state of components. For many years, this technology was not considered a potential tool for non-destructive testing in the construction industry due to the limitations imposed by its dimensions and the handling of ionising radiation.
Considerable technical improvements have been made to the X-ray components, enabling the production of miniaturised and portable systems such as the SpiderX-Edge model from GNR Srl.
Over the last 3 years, several studies have been carried out to test its applicability in the construction sector. Laboratory tests were carried out to compare the external load on wires and strands with the measurement of the stress state by X-ray diffraction. Following excellent results, several campaigns were carried out to check the infrastructure directly at bridges.
These initial surveys showed the need to make the measurement system even more manageable in order to meet the requirements of measurement in uncomfortable environments and situations and, above all, to minimise the intervention in the infrastructure and the restoration of the original state. GNR Srl was then commissioned by SINA SPA to design and develop a prototype that fulfils these requirements.
The combination of GNR’s thirty years of experience in the field of X-ray diffraction and SINA’s expertise in the field of structural inspection led to the implementation of the EDGE_P system, the model derived from the SpiderX Edge system and developed specifically for field measurements.
The portable and handy system consists of a measuring head, which can determine the stress state in just a few minutes, and a simple and quick fastening device with several degrees of freedom for correct positioning.
AreX L and AreX D for the determination of retained austenite
AreX L is a fully automated fixed-angle X-ray diffractometer equipped with the most advanced technical features to ensure accuracy, precision, safety and ease of use, specifically designed for the quantitative determination of retained austenite.
AreX D is the first benchtop X-ray diffractometer designed for the fast, accurate and simple determination of retained austenite in accordance with ASTM E 975-13 Standard Methods for the X-ray determination of retained austenite in steel with near random crystallographic orientation. It is able to determine the austenite volume fraction up to 1% in just a few minutes.
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GNR - X-ray and optical emission spectrometer systems
GNR was founded in 1984 in Milan (Italy) by Mario Gungui and Antonio Nigro. They took over OPTICA srl, one of the first and best-known European companies in the field of analytical measurement technology.
The continuous efforts made by GNR throughout the years of its activity have enabled the company to occupy a prominent place among the world’s most important manufacturers of optical emission spectrometers (OES) and to supply GNR devices all over the world.