X-Scan Imaging, a manufacturer of CMOS segmented X-ray sensitive line scan detectors and cameras, has released the XL8800 L-shaped X-ray line scan camera designed for inspection of automotive cast aluminium wheels.
Specifically configured to image a complete wheel in a single rotation, the XL8800 offers an ideal solution for 100 per cent on-line inspection verses current random or spot-check methods used in many less automated operations. Defects such as blowholes and porosities, which are common material defects found in many modern aluminium casting processes, create stress points and eventual wheel failure modes. X-ray imaging and appropriate software analysis can improve manufacturing throughput and easily detect and thereby eliminate a potential safety risk.
The line scan camera family includes five standard models covering a broad range of active contiguous detector lengths ranging from 822mm to 1,234mm, software selectable resolutions, speeds and sensitivities. The standard energy range is 40-160KV with optional range to 225KV. Other configurations can be made available as special orders.
Each camera model incorporates X-Scan Imaging's CMOS silicon imaging detector array chips with on-chip fully integrated signal processing circuits designed for visible wavelength and X-ray imaging applications. The close proximity of the analogue-to-digital converters (ADC) to the detector chips and the use of low-voltage-differential-signal (LVDS) technology help to minimise noise and maximise bandwidth. Typical dynamic range is 4,000 to 1.
Each camera includes a contiguous linear array of photodiodes, low-noise signal processing circuitry, 16-bit ADCs, digital control, and a choice of either Camera Link or Gigabit Ethernet interface to a remote (supplied separately or by user) PC-based frame grabber and/or data acquisition system.
A Gadox integrated direct-contact scintillator layer is attached to the surface of the detector array(s), which converts X-ray photons into visible light that is sensed by the linear array of CMOS photodiodes. A compact metal enclosure protects the camera detector and electronics from the X-ray radiation. Various scintillation materials and a range of thicknesses can be provided for optimising both detector sensitivity and image resolution.
Other applications for X-Scan Imaging cameras include printed circuit board inspection, industrial non-destructive testing (NDT), food, pharmaceutical and package content inspection, and security and cargo screening.
