• 넻빀寃깋
  • 븰젅룷듃
  • 끉臾
  • 湲곗뾽떊슜蹂닿퀬꽌
  • 痍⑥뾽옄猷
  • 뙆썙룷씤듃諛곌꼍
  • 꽌떇

끉臾 321嫄

We studied the polarization state in an apertureless scanning near-field microscopy (a-SNOM) operating in reflection mode by using three-dimensional Finite-difference Time-domain (FDTD) method. As a result, the electric field around tip apex in the near-field region enhanced four times stronger than
  • 럹씠吏 4럹씠吏
  • 媛寃 6,000썝
  • 諛쒗뻾씪 2019.03.01
  • 뙆씪醫낅쪟 븘겕濡쒕껙(pdf)
  • 諛쒗뻾湲곌 븳援옄湲고븰쉶
  • Yongfu Cai, Mitsuharu Aoyagi, Akira Emoto, Tatsutoshi Shioda, Takayuki Ishibashi
In this paper, a preliminary examination for a bubble sizing technique shows that a bubble of a two-phase flow can be measured by a quantitative method using patterns of an ultrasonic reflection coefficient on a single channel mode between parameters of an ultrasonic transducer and reflection coeffi
  • 럹씠吏 5럹씠吏
  • 媛寃 6,000썝
  • 諛쒗뻾씪 2019.03.01
  • 뙆씪醫낅쪟 븘겕濡쒕껙(pdf)
  • 諛쒗뻾湲곌 븳湲곌퀎븰쉶
  • Kil-Mo KOO, In-Cheol Chu, Nam-Hyun Choi, Chul-Hwa SONG, Won-Pil BAEK
Based on the idea of eigen-mode expansion, a method to analyze the reflection of Lamb wave from a finite vertical discontinuity of plate is theoretically derived and verified by experiment. The theoretical prediction is in good agreement with the experimental result, and this strongly suggests that
  • 럹씠吏 6럹씠吏
  • 媛寃 6,000썝
  • 諛쒗뻾씪 2019.03.01
  • 뙆씪醫낅쪟 븘겕濡쒕껙(pdf)
  • 諛쒗뻾湲곌 븳援鍮꾪뙆愿닿궗븰쉶
  • Jaeseok Park, Chang Heui Jang, Jong Po Lee
reflection and thru-transmission modes were made to map out the T-ray images. Especially this was demonstrated in thick GFRP laminates containing double saw slots. In carbon composites the penetration of terahertz waves is limited to some degree and the detection of flaws is strongly affected by the
  • 럹씠吏 8럹씠吏
  • 媛寃 6,000썝
  • 諛쒗뻾씪 2019.03.01
  • 뙆씪醫낅쪟 븘겕濡쒕껙(pdf)
  • 諛쒗뻾湲곌 븳援鍮꾪뙆愿닿궗븰쉶
  • Kwang-Hee Im, David K. Hsu
reflection mode 棺 measurements using one side of specimens. The 棺 was measured for three types of aluminum specimens, and the results were compared with those of the transmission method. The 棺 measured using the two methods were within 10 % difference, validating 棺 measurements in the reflection mod
  • 럹씠吏 8럹씠吏
  • 媛寃 6,000썝
  • 諛쒗뻾씪 2019.01.17
  • 뙆씪醫낅쪟 븘겕濡쒕껙(pdf)
  • 諛쒗뻾湲곌 븳援鍮꾪뙆愿닿궗븰쉶
  • 議곗꽦醫, 젙쁽議, 떊슚젙
reflection coefficient is linearly dependent on the equivalent circumferential extent of the defect and is independent of the axial length. In addition, it is shown that the coefficients for a steep defect are greater than those for a gentle defect.Abstract 1. 꽌濡 2. 떎뿕 옣移섏 紐⑤뱶遺꾨━ 3. 떎뿕 寃
  • 럹씠吏 6럹씠吏
  • 媛寃 6,000썝
  • 諛쒗뻾씪 2019.03.11
  • 뙆씪醫낅쪟 븘겕濡쒕껙(pdf)
  • 諛쒗뻾湲곌 븳援룞젰湲곌퀎怨듯븰쉶
  • 源젙뿽, 諛뺢꼍議
reflection from a defect consists of the wave pulses with gradually decaying amplitudes. Also the results show that the reflection coefficient initially increases with the crack length but finally reaches an oscillating regime.Abstract 1. 꽌濡 2. 異뺣갑뼢 寃고븿 떎뿕 3. 紐⑤뱶遺꾨━ 諛 諛섏궗怨꾩닔 4. 寃곕줎 Ref
  • 럹씠吏 6럹씠吏
  • 媛寃 6,000썝
  • 諛쒗뻾씪 2019.03.11
  • 뙆씪醫낅쪟 븘겕濡쒕껙(pdf)
  • 諛쒗뻾湲곌 븳援룞젰湲곌퀎怨듯븰쉶
  • 源쁺셿, 諛뺢꼍議
Diesel car`s smoke measurement equipment and method were investigated based on the exhaust gas regulations. Reflection photo method and light extinction method for measuring smoke were compared under conditions of both no load mode and Lug-down 3 mode. Free acceleration mode at no load condition was
  • 럹씠吏 7럹씠吏
  • 媛寃 4,000썝
  • 諛쒗뻾씪 2008.03.18
  • 뙆씪醫낅쪟 븘겕濡쒕껙(pdf)
  • 諛쒗뻾湲곌 븳援븞쟾븰쉶(援 븳援궛뾽븞쟾븰쉶)
  • 源二쇱쿋 ( Ju Chul Kim ) , 씠異⑺썕 ( Choong Hoon Lee )
mode decomposition technique employing chirplet transform, which is able to separate the individual modes from dispersive and multimodal waveform measured with the magnetostrictive sensor, and to estimate the time-frequency centers and individual energies of the reflection, which would be used to lo
  • 럹씠吏 7럹씠吏
  • 媛寃 4,000썝
  • 諛쒗뻾씪 2014.11.13
  • 뙆씪醫낅쪟 븘겕濡쒕껙(pdf)
  • 諛쒗뻾湲곌 븳援냼쓬吏꾨룞怨듯븰쉶
  • 源젙뿽 ( Chung Youb Kim ) , 諛뺢꼍議 ( Kyung Jo Park )
mode decomposition technique employing chirplet transform, which is able to separate the individual modes from dispersive and multimodal waveform measured with the magnetostrictive sensor, and to estimate the time-frequency centers and individual energies of the reflection, which would be used to lo
  • 럹씠吏 7럹씠吏
  • 媛寃 6,000썝
  • 諛쒗뻾씪 2019.02.20
  • 뙆씪醫낅쪟 븘겕濡쒕껙(pdf)
  • 諛쒗뻾湲곌 븳援냼쓬吏꾨룞怨듯븰쉶
  • 源젙뿽, 諛뺢꼍議
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