Laser Induced Breakdown Spectroscopy (LIBS) (Computers - Information Technologies)
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Item ID 15306063 in Category: Computers - Information Technologies
Laser Induced Breakdown Spectroscopy (LIBS) | |
Laser Induced Breakdown Spectroscopy (LIBS) Laser-induced breakdown spectroscopy (LIBS) uses a highly energetic laser pulse as an excitation source, to optically breakdown, vaporize and convert elements in the sample to plasma state. The amount of sample subjected to breakdown (termed ‘ablation’) and vaporization to plasma, is in the range of nanograms to picograms. The plasma cools, within microseconds and various atoms emit characteristic spectral lines that can identify them. The detector needs to be gated to capture full spectral information within the microseconds duration. The principle is illustrated in Figure 1. Adhesive bonded fibre-polymer composites are important for applications such as light-weighting of structures and components in the transportation sector. They also find application in consumer goods, industrial and infrastructural applications. Composites can be bonded to each other or to metals or non-metals using adhesives. Adhesive bonds between surfaces require the surfaces to be free from contaminants. Even trace contaminants can reduce bond strength and result in structural failure under load. Carbon Fibre Reinforced Polymers (CFRP) are an important category of composites, due to their light weight, strength and corrosion resistance. Due to its high sensitivity LIBS can be used to detect ultralow concentrations of contamination on CFRP samples. In this case study, the LIBS technique was used for detection of low levels of silicone contaminants in CFRP composites. Sample (30.5 cm × 30.5 cm) CFRP panel surfaces were contaminated in a controlled manner with polydimethylsiloxane (PDMS). The panels were analyzed by LIBS before and after laser ablation, providing information on the ability of LIBS to remove silicone as well as to detect very low levels of silicone.  | |
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| Target State: New Jersey Target City : Newark Last Update : Jul 28, 2023 11:45 AM Number of Views: 78 | Item Owner : Infinita lab Contact Email: Contact Phone: 088887 83090 |
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2024-04-29 (0.222 sec)