| ชื่อเรื่อง | : | Use of two wavelengths in microscopic TV holography for nondestructive testing |
| นักวิจัย | : | Upputuri, Paul Kumar , Umapathy, Somasundaram , Pramanik, Manojit , Kothiyal, Mahendra Prasad , Nandigana, Krishna Mohan |
| คำค้น | : | DRNTU::Engineering::Materials::Photonics and optoelectronics materials |
| หน่วยงาน | : | Nanyang Technological University, Singapore |
| ผู้ร่วมงาน | : | - |
| ปีพิมพ์ | : | 2557 |
| อ้างอิง | : | Upputuri, P. K., Umapathy, S., Pramanik, M., Kothiyal, M. P., & Nandigana, K. M. (2014). Use of two wavelengths in microscopic TV holography for nondestructive testing. Optical engineering, 53(11), 110501-. , http://hdl.handle.net/10220/24220 , http://dx.doi.org/10.1117/1.OE.53.11.110501 , 182542 |
| ที่มา | : | - |
| ความเชี่ยวชาญ | : | - |
| ความสัมพันธ์ | : | Optical engineering |
| ขอบเขตของเนื้อหา | : | - |
| บทคัดย่อ/คำอธิบาย | : | Single wavelength TV holography is a widely used whole-field noncontacting optical method for nondestructive testing (NDT) of engineering structures. However, with a single wavelength configuration, it is difficult to quantify the large amplitude defects due to the overcrowding of fringes in the defect location. In this work, we propose a two wavelength microscopic TV holography using a single-chip color charge-coupled device (CCD) camera for NDT of microspecimens. The use of a color CCD allows simultaneous acquisition of speckle patterns at two different wavelengths and makes the data acquisition as simple as that of the single wavelength case. For the quantitative measurement of the defect, an error compensating eight-step phase-shifted algorithm is used. The design of the system and a few experimental results on small-scale rough specimens are presented. |
| บรรณานุกรม | : |
Upputuri, Paul Kumar , Umapathy, Somasundaram , Pramanik, Manojit , Kothiyal, Mahendra Prasad , Nandigana, Krishna Mohan . (2557). Use of two wavelengths in microscopic TV holography for nondestructive testing.
กรุงเทพมหานคร : Nanyang Technological University, Singapore. Upputuri, Paul Kumar , Umapathy, Somasundaram , Pramanik, Manojit , Kothiyal, Mahendra Prasad , Nandigana, Krishna Mohan . 2557. "Use of two wavelengths in microscopic TV holography for nondestructive testing".
กรุงเทพมหานคร : Nanyang Technological University, Singapore. Upputuri, Paul Kumar , Umapathy, Somasundaram , Pramanik, Manojit , Kothiyal, Mahendra Prasad , Nandigana, Krishna Mohan . "Use of two wavelengths in microscopic TV holography for nondestructive testing."
กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2557. Print. Upputuri, Paul Kumar , Umapathy, Somasundaram , Pramanik, Manojit , Kothiyal, Mahendra Prasad , Nandigana, Krishna Mohan . Use of two wavelengths in microscopic TV holography for nondestructive testing. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2557.
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