公开(公告)号：KR1020130077272A

公开(公告)日：2013-07-09

申请号：KR1020110145893

申请日：2011-12-29

Applicant: 한국과학기술원

Inventor： 정형조 ,  성승훈 ,  정호연

IPC: F16L55/033 ,  F16L43/00 ,  F16L9/21

CPC classification number: F16L55/033 ,  F16L9/21 ,  F16L43/00

Abstract: PURPOSE: A vacuum noise preventing type elbow is provided to improve the efficiency of reducing noise by effectively blocking noise while preventing the degradation of the performance of the elbow even in long-term usage. CONSTITUTION: A vacuum noise preventing type elbow (EL) includes a vacuum unit (VA) which is formed into a hollow space of a vacuum state on an area of a thickness portion of an outer curved unit (OT) of the elbow. The transmission of noise generated inside the elbow is blocked by the vacuum unit. The vacuum unit is formed into a shape having a predetermined width lengthways along the curved surface of the outer curved unit. The vacuum unit is formed on a thickness portion of the outer curved unit.

Abstract translation: 目的：提供一种防止真空噪音的弯头，通过有效地阻挡噪声来提高降低噪音的效率，同时防止长期使用时弯头的性能下降。 构成：真空噪声防止型弯头（EL）包括真空单元（VA），该真空单元（VA）在弯头的外弯曲单元（OT）的厚度部分的区域上形成为真空状态的中空空间。 肘内产生的噪音传输被真空装置阻挡。 真空单元形成为沿着外弯曲单元的弯曲表面具有预定宽度的形状。 真空单元形成在外弯曲单元的厚度部分上。

公开(公告)号：KR101181502B1

公开(公告)日：2012-09-11

申请号：KR1020100120780

申请日：2010-11-30

Applicant: 한국과학기술원

Inventor： 정형조 ,  이승우 ,  장동두

IPC: F03D9/00 ,  F03D3/04

CPC classification number: Y02B10/30 ,  Y02E10/74

Abstract: 본 발명은 건물의 측벽에 부착하여 건물의 상측에서 발생하는 바람의 정압 및 동압, 그리고 높이에 따른 압력차를 이용하여 발전하는 건물부착형 풍력발전장치에 관한 것으로, 건물의 외벽에 부착가능하고 전면이 개방되는 하우징; 상기 하우징의 상측 내부에 바람에 의해 회전가능하도록 설치되는 회전발전부; 상기 회전발전부의 전면측을 폐쇄하는 전면가림부; 상기 회전발전부로 바람을 공급하도록 하측으로부터 상기 하우징의 후면을 향하여 점점 두께가 얇아지도록 형성되고, 상기 하우징에 대하여 전면 및 후면 방향으로 전후이동이 가능하도록 배치되는 안내판; 상기 안내판의 후면측으로 상기 하우징의 내벽면에 부착되는 직선발전부; 및 상기 하우징의 상측으로 형성돼서 상기 회전발전부를 통과한 공기를 배출하는 배기포트를 포함한다.

公开(公告)号：KR1020120082574A

公开(公告)日：2012-07-24

申请号：KR1020110003925

申请日：2011-01-14

Applicant: 한국과학기술원

Inventor： 정형조 ,  성승훈 ,  구기영 ,  박종웅

IPC: G01B21/32 ,  G01P15/00

Abstract: PURPOSE: A method for detecting damage of a multi-story structure is provided to measure acceleration per each story and to detect partial damages of the each story in advance by calculating a damage-induced inter-story deflection with a simple method. CONSTITUTION: A method for detecting damage of a multi-story structure is as follows. Acceleration signals are measured for the predetermined time in several stories of a measurement object multi-story structure by using an accelerometer(S10). Modal flexibility matrices with respect to the several stories based on the measured acceleration signals is calculated(S20). The positive shear inspection load is applied to the modal flexibility matrices so that modal flexibility base deflections with respect to each story are calculated(S30). A damage-induced inter-story deflection caused by a difference of a reference modal flexibility base deflection before being damaged and the modal flexibility base deflection with respect to each layer(S40). The calculated damage-induced inter-story deflection and a critical damage deflection are compared so that a point of the layer where the damage-induced inter-story deflection exceeds and whether the damage-induced inter-story deflection is exceeded or not are detected(S50).

Abstract translation: 目的：提供一种用于检测多层结构损伤的方法，以便通过简单的方法计算损伤引起的层间偏差，来预测每个故事的加速度，并预先检测每个故事的部分损伤。 构成：多层结构的损伤检测方法如下。 通过使用加速度计，在测量对象多层结构的几个故事中测量加速度信号的预定时间（S10）。 计算出相对于基于所测量的加速度信号的几个故事的模态灵活性矩阵（S20）。 将正剪切检测载荷应用于模态柔性矩阵，从而计算相对于每个故事的模态柔性基础偏移（S30）。 由损伤之前的参考模态柔性基础偏转和相对于每个层的模态柔性基础偏转引起的损伤引起的层间偏转（S40）。 比较计算的损伤引起的层间偏转和临界损伤偏转，以便检测损伤引起的层间偏转超过的层的一个点以及是否超过损伤引起的层间偏转。 S50）。