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    • 51. 发明申请
    • EVALUATING METHOD OF THE FRACTURE TOUGHNESS USING THE CONTINUOUS INDENTATION METHOD
    • 使用连续灌注方法评估破裂韧性的方法
    • WO2006052060A1
    • 2006-05-18
    • PCT/KR2005/003039
    • 2005-09-14
    • FRONTICS, INC.KIM, Kwang-HoLEE, Jung-SukSEO, Yang-WonCHOI, Yeol
    • KIM, Kwang-HoLEE, Jung-SukSEO, Yang-WonCHOI, Yeol
    • G01N3/42
    • G01N3/42G01N2203/0064G01N2203/0078
    • The present invention relates to a method of evaluating the fracture toughness of a material using the continuous indentation technique. In the method of this invention, the stress coefficient, strain hardening modulus and yield stress of the material are determined using the continuous indentation technique and, thereafter, the reduced elastic modulus (E r ) of the material is calculated. The effective elastic modulus and the initial elastic modulus are calculated and, thereafter, the damage parameter is calculated using the void volume fraction. The critical elastic modulus and the characteristic fracture initiation point of the indentation depth are determined using the damage parameter and, thereafter, the fracture toughness of the material is evaluated. The present invention is advantageous in that the fracture toughness of a brittle material can be evaluated precisely using a nondestructive evaluation technique.
    • 本发明涉及使用连续压痕技术评价材料的断裂韧性的方法。 在本发明的方法中,使用连续压痕技术确定材料的应力系数,应变硬化模量和屈服应力,然后计算材料的弹性模量(E r)。 计算有效弹性模量和初始弹性模量,此后,使用空隙体积分数计算损伤参数。 使用损伤参数确定压痕深度的临界弹性模量和特征性断裂起始点,然后评估材料的断裂韧性。 本发明的优点在于,可以使用非破坏性评价技术精确地评价脆性材料的断裂韧性。
    • 59. 发明申请
    • HEATING DEVICE FOR HOT-WATER TANKS
    • 用于热水罐的加热装置
    • WO2003016799A1
    • 2003-02-27
    • PCT/KR2002/000774
    • 2002-04-26
    • KIM, Kwang, SikLEE, Jae, Young
    • KIM, Kwang, SikLEE, Jae, Young
    • F25D11/00
    • B67D7/80B67D2210/00102F24H1/202F24H9/1818H05B3/80
    • Disclosed herein is a heating device for hot-water tanks included in hot and cold water dispensers, hot and cold water purifiers, or vending machines. The heating device includes a heater (100) and a terminal holder unit (120). The heater (100) is received by a hot-water tank (20) through an opening (22) formed on an end wall of the hot-water tank, and consists of first and second terminals (110a, 110b) and a heating coil (112) having a double-spiral shape and downwardly extending from the first and second terminals to form a closed loop structure. The terminal holder unit (120) is fitted into the opening of the hot-water tank (20), and consists of a terminal holder (130) holding the first and second terminals and a holder cap (150) which fixes the terminal holder in the opening.
    • 这里公开了一种用于热水和冷水分配器,冷热水净化器或自动售货机中的热水箱的加热装置。 加热装置包括加热器(100)和端子保持器单元(120)。 加热器(100)由热水箱(20)通过形成在热水箱的端壁上的开口(22)容纳,并由第一和第二端子(110a,110b)和加热线圈 (112)具有双螺旋形状并且从第一和第二端子向下延伸以形成闭环结构。 端子座单元(120)装配在热水箱(20)的开口内,由保持第一和第二端子的端子座(130)和将端子座固定在其中的保持器盖(150)组成 开幕。