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Shukla, Rashmi
- Surface Integrity Determination of Aluminum Plates Using Laser-generated Lamb Waves
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PDF Views:103
Authors
Affiliations
1 Department of Physics, Christ Church College, Kanpur-208001, IN
2 Indian Institute of Technology Kanpur Kanpur-208016, IN
1 Department of Physics, Christ Church College, Kanpur-208001, IN
2 Indian Institute of Technology Kanpur Kanpur-208016, IN
Source
Indian Journal of Science and Technology, Vol 3, No 3 (2010), Pagination: 231-234Abstract
Laser based ultrasonics is an important method in non-destructive testing for material characterization and process control. This paper describes the generation and characterization of Lamb waves in a thin aluminum plate-using laser based ultrasonics. Nd: YAG laser is used for ultrasonic generation and He-Ne Laser Heterodyne Interferometer is used for detection. Laser generation of Lamb waves leads to simultaneous generation of various frequency component as well as multiple Lamb wave modes. The surface integrity of a thin aluminium plate is studied.Keywords
Lamb Waves, Laser Generation, Surface IntegrityFull Text
References
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- Studies of Different Guava Cultivars (Psidium guajava L.) for Nutritional and Livelihood Security Suited to Degraded Soils
Abstract Views :247 |
PDF Views:1
Authors
Affiliations
1 Krishi Vigyan Kendra, Khandwa (M.P.), IN
1 Krishi Vigyan Kendra, Khandwa (M.P.), IN
Source
The Asian Journal of Horticulture, Vol 12, No 1 (2017), Pagination: 91-95Abstract
Guava trees are well adapted to a wide range of soil types including sands, loams, rock-based soils, muck degraded soils. A soil pH of 4.5 to 7 is ideal but plants do well in high pH soils (7-8.5) if supplied with chelated iron materials. Guava trees produced by air-layering or cuttings generally have a shallow ischolar_main system with most ischolar_mains within 12 to 18 inches (30-45 cm) of the soil surface. Three varieties, viz., Lucknow-49, Allhabad safeda and Apple guava are of immense commercial importance but the physico-chemical studies of these varieties have not been taken up by any previous workers who have described various guava varieties. The present studies, therefore, provides a details information on physico-chemical characteristics of the varieties collected from the guava orchards of the fruits Research farm, Imalia, JNKVV, Jabalpur (M.P.). An investigation was carried out to evaluate the physical character i.e. weight, size length, diameter and specific gravity. Guava variety Allahabad safeda was found to top the list in relation to all the parameters and observed maximum values and proved significantly superior over both the varieties Lucknow-49 and Apple guava, respectively. Chemical composition of the fruits of Lucknow-49 showed superior with respect to pH, acidity, ascorbic acid, pectin, fibre, total soluble solid, total sugar, reducing and non-reducing sugars compared to Allahabad safeda and Apple guava. The above findings clearly indicate that the variety Lucknow-49 is to be the best variety with respect quality constituents required for making various guava processed products for nutritional and livelihood security.Keywords
Processed Products, Physical Parameter, Chemical Composition, Reducing Sugar, Non-Reducing Sugar.
References
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