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1. 发明申请

WO1992013261A1 A TEST SPECIMEN/JAW ASSEMBLY THAT EXHIBITS BOTH SELF-RESISTIVE AND SELF-INDUCTIVE HEATING IN RESPONSE TO AN ALTERNATING ELECTRICAL CURRENT FLOWING THERETHROUGH 审中-公开
标题翻译：一个测试样本/ JAW组件，显示出自己的电阻和自感加热响应于交替电流流过
公开(公告)号：WO1992013261A1
公开(公告)日：1992-08-06
申请号：PCT/US1992000401
申请日：1992-01-14
申请人： DUFFERS SCIENTIFIC, INC.
发明人： DUFFERS SCIENTIFIC, INC. , FERGUSON, Hugo, Stanley
IPC分类号： G01N03/18
CPC分类号： H05B6/10 , G01N3/04 , G01N3/18 , G01N33/388 , G01N2203/0019 , G01N2203/0222
摘要： Apparatus either for a specimen that is to be held in a jaw assembly of, for example, a dynamic thermal-mechanical testing system or for the jaw assembly itself wherein the specimen or jaw assembly, respectively, exhibits both self-resistive and self-inductive heating whenever a sufficiently large alternating (AC) electrical current is passed serially therethrough. Whenever current is passed through the specimen or jaw assembly, the heating sections (205, 206; 305, 306; 406, 407; 406', 407'; 512, 512') will exhibit both self-resistive and self-inductive heating wherein the amount of additional heat generated through self-induction and propagating into the ends of the specimen can be set to compensate for heat loss that would otherwise occur from the ends of the specimen into the neighboring jaw assembly thereby assuring that substantially no longitudinal temperature gradients are established either along the mid-span region of the specimen or along the entire specimen while heating current passes therethrough.

2. 发明申请

WO1992015857A1 APPARATUS AND METHOD FOR DEFORMING A SPECIMEN AND THEREBY DETERMINE THE STRAIN RATE 审中-公开
标题翻译：设备和方法，用于变形样品，并确定应变速率
公开(公告)号：WO1992015857A1
公开(公告)日：1992-09-17
申请号：PCT/US1992001619
申请日：1992-02-28
申请人： DUFFERS SCIENTIFIC, INC.
发明人： DUFFERS SCIENTIFIC, INC. , FERGUSON, Hugo, Stanley
IPC分类号： G01N03/32
CPC分类号： G01N3/18 , G01N3/10 , G01N2203/0222
摘要： Apparatus, and an accompanying method for use therein, for a dynamic material testing system (500), and particularly for one that tests a specimen (570) by compressively deforming its work zone and that has independent control over specimen deformation (strain) and strain rate. The apparatus can also simultaneously direct resistance heat or conductively cool the specimen, under controlled conditions, in order to establish isothermal planes at a desired substantially uniform temperature throughout the specimen work zone before, during and after each compressive deformation thereof.

3. 发明申请

WO1988000104A2 METHOD AND APPARATUS FOR MEASURING AND CONTROLLING INDENTATION IN RESISTANCE WELDING 审中-公开
标题翻译：用于测量和控制电阻焊接的方法和装置
公开(公告)号：WO1988000104A2
公开(公告)日：1988-01-14
申请号：PCT/US1987001312
申请日：1987-06-04
申请人： DUFFERS SCIENTIFIC, INC.
发明人： DUFFERS SCIENTIFIC, INC. , FERGUSON, Hugo, Stanley
IPC分类号： B23K11/10
CPC分类号： B23K11/115 , B23K11/253
摘要： Apparatus and accompanying methods for use therein for measuring and controlling weld indentation during resistance welding operations. During a welding operation, the apparatus measures changes in a distance separating a reference point located on an electrode assembly (141, 142) and a region situated on the surface (113, 114) of the workpiece (105, 106) being welded wherein the region is not substantially indented by the electrode. Specifically, a distance measuring system (200, 400) first establishes the location of the surface relative to the electrode (103, 104) before any welding current is passed through the weld area. The indentation is repeatedly measured by detection of ultrasonic echoes (120, 123) from the surface of the material being welded. Such measurements are taken at frequent intervals during the current flow period during which the weld (117) is formed in order to determine on a continuous basis the indentation of the electrode into the surface. The welding power (150) may be terminated when the measured indentation reaches the desired value. In order to obtain more precise control of the indentation, the rate at which indentation occurs can be measured and the welding power can be changed on a half cycle by half cycle basis (612, 613) to increase or decrease the indentation rate according to a desired indentation program (608).
摘要翻译：用于测量和控制电阻焊接操作期间焊缝压痕的装置及其附带方法。在焊接操作期间，该装置测量分离位于电极组件（141,142）上的参考点和位于被焊接的工件（105,106）的表面（113,114）上的区域的距离的变化，其中，区域基本上不被电极缩进。具体地，距离测量系统（200,400）首先在任何焊接电流通过焊接区域之前建立相对于电极（103,104）的表面的位置。通过从待焊接的材料的表面检测超声回波（120,123）来反复测量压痕。这样的测量是在当前流动周期期间频繁地进行的，在此期间形成焊缝（117），以便连续地确定电极到表面的凹陷。当测量的压痕达到所需值时，焊接功率（150）可以终止。为了获得对压痕的更精确的控制，可以测量发生压痕的速率，并且焊接功率可以半个周期（半周期）（612,613）改变，以根据下式来增加或减小压痕率所需的缩进程序（608）。

4. 发明申请

WO1994014046A2 APPARATUS THAT EXHIBITS BOTH SELF-RESISTIVE AND SELF-INDUCTIVE HEATING FOR USE IN A DYNAMIC THERMAL-MECHANICAL TESTING SYSTEM, AND TEST SPECIMEN THEREFOR 审中-公开
标题翻译：在动态热机械测试系统中使用的自动电感和自感加热装置及其测试样本的装置
公开(公告)号：WO1994014046A2
公开(公告)日：1994-06-23
申请号：PCT/US1993010549
申请日：1993-10-29
申请人： DUFFERS SCIENTIFIC, INC.
发明人： DUFFERS SCIENTIFIC, INC. , FERGUSON, Hugo, Stanley
IPC分类号： G01N03/18
CPC分类号： G01N3/60 , G01N3/04 , G01N3/18 , G01N33/388 , G01N2203/0019 , G01N2203/0222 , H05B3/40 , H05B6/00 , H05B6/10
摘要： Apparatus for a dynamic thermal-mechanical testing system that exhibits both self-resistive and self-inductive heating whenever a sufficiently large alternating (AC) electrical current is passed through the apparatus. In one embodiment, an oven (1800) is fabricated from a material which undergoes self-resistive heating to radiantly heat an internal volume of the oven. The oven also includes appropriately shaped heating sections (1830), which undergo self-resistive and self-inductive heating to compensate for heat losses into a support for the oven. In another embodiment, a metallic conductor (900, 900', 1425, 1600) is fabricated from a material which undergoes self-resistive heating and which contains appropriately shaped and sized heating sections (925, 925', 1440, 1445, 1620, 1625, 1630) such that each heating section undergoes self-inductive and self-resistive heating. Such a conductor is situated in various types of jaw assemblies (901, 901', 1420, 1420', 1650, 1650'). The conductor abuts againts and is in electrical contact with at least one end-face of a specimen. Whenever current is passed through the conductor, the heating sections will exhibit both self-resistive and self-inductive heating wherein the amount of heat generated through self-induction and propagating into one or more ends of the specimen can be set to produce controlled longitudinal temperature gradients along the specimen.
摘要翻译：用于动态热机械测试系统的设备，每当足够大的交流（AC）电流通过设备时，它们都展现自发和自感加热。在一个实施例中，烤箱（1800）由经历自加热以辐射加热烤箱内部体积的材料制成。烘箱还包括适当形状的加热部分（1830），其经受自阻和自感加热，以补偿热量损失到炉的支撑件中。在另一个实施例中，金属导体（900,900'，1425,1600）由经历自加热的材料制成，并且其包含适当形状和尺寸的加热部分（925,925'，1440,1445,1620,1625 ，1630），使得每个加热部分进行自感和自加热。这种导体位于各种类型的钳口组件（901,901'，1420,1420'，1650,1650'）中。导体邻接，并与样品的至少一个端面电接触。每当电流通过导体时，加热部分将表现出自阻和自感加热，其中通过自感应产生并传播到样品的一个或多个端部的热量可被设定为产生受控的纵向温度沿标本的梯度。

5. 发明申请

WO1992019953A1 A DYNAMIC THERMAL-MECHANICAL MATERIAL TESTING SYSTEM UTILIZING A BALANCED MAGNETIC FIELD 审中-公开
标题翻译：使用平衡磁场的动态热机械材料测试系统
公开(公告)号：WO1992019953A1
公开(公告)日：1992-11-12
申请号：PCT/US1992003501
申请日：1992-04-28
申请人： DUFFERS SCIENTIFIC, INC.
发明人： DUFFERS SCIENTIFIC, INC. , FERGUSON, Hugo, Stanley
IPC分类号： G01N03/18
CPC分类号： G01N3/10 , G01N3/18 , G01N2203/0222
摘要： Apparatus (100) for a dynamic thermal-mechanical material testing system that not only self-resistively heats and deforms a specimen (170), both under controlled conditions, but also substantially reduces adverse affects in specimen performance, such as magnetically induced motion and non-uniform specimen heating, that would otherwise result from magnetic fields which impinge upon the specimen and are caused by high heating currents flowing in the apparatus. This reduction is achieved by spatially locating high current carrying conductors (102, 102') used in the apparatus such that these conductors collectively generate substantially balanced, i.e. substantially equal, and opposite magnetic fields (431, 433) that effectively cancel each other out in a volumetric region in the apparatus which contains the specimen and particularly its work zone.
摘要翻译：用于动态热 - 机械材料测试系统的装置（100），其不仅在受控条件下自我加热和变形样品（170），而且还显着减少了样品性能的不利影响，例如磁感应运动和非磁性材料 - 样品加热，否则将由撞击在样本上的磁场引起，并且是由在设备中流动的高加热电流引起的。这种减少是通过在设备中使用的大电流承载导体（102,102'）进行空间定位来实现的，使得这些导体共同地产生基本平衡的，即基本上相等的和相对的磁场（431,433），其相互抵消装置中的体积区域包含试样，特别是其工作区域。

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