Noncoherent light interferometry as a thickness gauge

2D Color-Intensity Representation of Ultrasonic Thickness Gauge Measurements

Materials Evaluation ◽

10.32548/2020.me-04177 ◽

2020 ◽

pp. 1192-1198

Author(s):

M.S. Mohammad ◽

Tibebe Tesfaye ◽

Kim Ki-Seong

Keyword(s):

Cost Effective ◽

The Other ◽

Thickness Gauge ◽

Color Intensity ◽

Digital Readout ◽

Flat Surfaces ◽

Video Cameras ◽

Wide Range ◽

Cost Effective Alternative ◽

Ultrasonic Thickness

Ultrasonic thickness gauges are easy to operate and reliable, and can be used to measure a wide range of thicknesses and inspect all engineering materials. Supplementing the simple ultrasonic thickness gauges that present results in either a digital readout or as an A-scan with systems that enable correlating the measured values to their positions on the inspected surface to produce a two-dimensional (2D) thickness representation can extend their benefits and provide a cost-effective alternative to expensive advanced C-scan machines. In previous work, the authors introduced a system for the positioning and mapping of the values measured by the ultrasonic thickness gauges and flaw detectors (Tesfaye et al. 2019). The system is an alternative to the systems that use mechanical scanners, encoders, and sophisticated UT machines. It used a camera to record the probe’s movement and a projected laser grid obtained by a laser pattern generator to locate the probe on the inspected surface. In this paper, a novel system is proposed to be applied to flat surfaces, in addition to overcoming the other limitations posed due to the use of the laser projection. The proposed system uses two video cameras, one to monitor the probe’s movement on the inspected surface and the other to capture the corresponding digital readout of the thickness gauge. The acquired images of the probe’s position and thickness gauge readout are processed to plot the measured data in a 2D color-coded map. The system is meant to be simpler and more effective than the previous development.

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Root Cause Analysis for the Thickness Measurement of Corrode Metal Sheet by Ultrasonic Thickness Gauge

i-manager s Journal on Material Science ◽

10.26634/jms.1.2.2455 ◽

2013 ◽

Vol 1 (2) ◽

pp. 34-40

Author(s):

Sheetal Kumar Dewangan ◽

◽

K. Ganpati Shrinivas ◽

Keyword(s):

Root Cause Analysis ◽

Thickness Measurement ◽

Metal Sheet ◽

Thickness Gauge ◽

Cause Analysis ◽

Root Cause ◽

Ultrasonic Thickness

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Anti-allergy Effect of Sulfated Polysaccharide from Sargassum polycystum on Dinitrofluorobenzene Induced Allergic Contact Dermatitis in Mice

The Natural Products Journal ◽

10.2174/2210315510999200714111931 ◽

2020 ◽

Vol 10 ◽

Author(s):

Sharmaine Y. Dela Cruz ◽

Ross D. Vasquez ◽

Reginald B. Salonga ◽

Mary Jho-Anne T. Corpuz

Keyword(s):

Contact Dermatitis ◽

Allergic Contact Dermatitis ◽

Sulfated Polysaccharide ◽

Hot Water ◽

Thickness Gauge ◽

Sargassum Polycystum ◽

Acd Model ◽

Allergic Contact ◽

Ventral Skin ◽

Allergic Effect

Background: Sargassum polycystum C. Agardh has potent antioxidant and anti-inflammatory properties. However, its anti-allergic effect has not yet been reported. In this study, we investigated the anti-allergic effects of sulfated polysaccharide of S. polycystum (SPSP) in Dinitrofluorobenzene (DNFB)- induced allergic contact dermatitis animal model. Methods: SPSP was extracted through hot water extraction method and was subjected to compositional analyses. For the allergic contact dermatitis (ACD) model, symptoms were induced by the topical application of 0.5% DNFB on the shaved ventral skin of mice. SPSP (500, 1000, and 2000 mg/kg) and Prednisolone were orally administered for seven days after sensitization. Elicitation was performed seven days later with 0.2% DNFB. After this, ear thickness was measured at baseline and 24 hours post elicitation using a dial thickness gauge. Serum of mice was obtained 24 hours post elicitation, and the level of IFNγ and TNF Results: SPSP afforded 33.6% carbohydrates, 23.7% sulfate, 7.5% protein, and 1.5% uronic acid contents. SPSP inhibited the ear swelling and cytokines (IFNγ and TNF Conclusion: These findings showed that the sulfated polysaccharide from S. polycytum is a potential natural source to treat Allergic Contact Dermatitis. The effect is attributed to polysaccharide-protein complex present in the extract, but further studies are needed to establish the exact mechanism of action of SPSP in the treatment of the disease.

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