A Two‐Dimensional Strain Gauge Transducer System for the Lips and Jaw

1973 ◽  
Vol 53 (1) ◽  
pp. 295-295
Author(s):  
J. H. Abbs ◽  
B. N. Gilbert
Keyword(s):  
Strain Gauge ◽  
Two Dimensional ◽  
Strain Gauge Transducer

Repeatable and High-Efficiency Patterning of Silver Nanowires on PDMS Using Micromilled Aluminum Molds

2019 ◽  
Vol 7 (4) ◽  
Author(s):  
Rick Helgason ◽  
Ayan Choudhury ◽  
Yongjun Lai
Keyword(s):  
Efficient Method ◽  
Strain Gauge ◽  
High Efficiency ◽  
Silver Nanowires ◽  
Silver Nanowire ◽  
Two Dimensional ◽  
Wide Range ◽  
Sharp Edges

Abstract We present an inexpensive, repeatable, and efficient method of patterning silver nanowires onto polydimethylsiloxane (PDMS) using a mold-based approach. A micromilling machine is used to prepare an aluminum mold with a raised pattern so that PDMS cured in these molds is imprinted with the design. A solution of silver nanowires and ethanol can then be injected into the pattern. This method can be used to pattern silver nanowires onto PDMS in any two-dimensional (2D) layout, meaning it can be extended to produce a wide range of PDMS/silver nanowire-based sensors and devices. We demonstrate this by the development of two separate patterns. An intricate logo is developed in order to demonstrate the capability of patterning curved and sharp edges, and a strain gauge is developed in order to demonstrate a functional device.

Axial Stress-Time History Measurements in Impulsively Loaded Aluminum Rods Using the Double Gauge Technique

1985 ◽  
Vol 52 (4) ◽  
pp. 977-979
Author(s):  
Z. Rosenberg ◽  
M. Mayseless ◽  
Y. Partom
Keyword(s):  
Strain Gauge ◽  
Axial Stress ◽  
Time History ◽  
Experimental Stress ◽  
Two Dimensional ◽  
Stress History ◽  
Resistance Change ◽  
Measured Stress ◽  
Time Histories

The purpose of this Brief Note is to present experimental stress-time histories along the centerline of impulsively loaded aluminum rods. The measurement is based on the double gauge technique in which we use both a manganin stress gauge and a constantan strain gauge at the same location in the rod. The strain gauge record enables one to eliminate the strain contribution to stress gauge resistance change and have a stress-time history. The measured stress history is compared to a calculated one using two-dimensional Lagrangian code and the agreement between them is good.

Strain-Gauge Transducer for Fluctuating Pressure Study

1967 ◽  
Vol 35 (5) ◽  
pp. 415-418
Author(s):  
B. S. Gill ◽  
V. J. Modi ◽  
K. L. Tong
Keyword(s):  
Strain Gauge ◽  
Fluctuating Pressure ◽  
Strain Gauge Transducer

Fabrication of Articulated Microarm for Endoscopy by Stacked Microassembly Process (STAMP)

2009 ◽  
Vol 21 (3) ◽  
pp. 412-418
Author(s):  
Keisuke Narumi ◽  
◽  
Daisaku Azuma ◽  
Fumihito Arai
Keyword(s):  
Image Processing ◽  
Strain Gauge ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Two Dimensional ◽  
Fabrication Method ◽  
Feedback Control System ◽  
Angle Sensor ◽  
Three Dimensional Structure ◽  
Processing Program

Recently it is expected to develop endoscopic tools to grip and lift a target tumor in Endoscopic Submucosal Dissection (ESD). We proposed a new ESD surgery concept in which two wire-driven microarms (1.8 × 1.8 × 22 mm) from the tip of endoscope help lift the tumor to cut. This paper emphasizes a new fabrication method of arm which is fabricated by Stacked Microassembly Process (STAMP). STAMP is a fabrication method of three-dimensional structure by stacking up two-dimensional sheet layers. Generically it is difficult to build a micro-order three-dimensional structure, but we overcame this problem by this method. The microarm was composed of five layers which were fabricated separately using photolithography and electroplating. In the end, individual layers were assembled together and fixed. The microarm used the elastic deformation of metal to bend (Cu or Phosphor Bronze). A strain gauge was attached to the elastic joint as an angle sensor. We calibrated the relation between the angle and output of the strain gauge using image processing program. As the relation was good linearity (R2= 0.9933), we constructed PID feedback control system. Finally, we fabricated a gripper which loaded into the tip of the microarm. The gripper could lift up a piece of meat (2 g).

MODELING OF STATIC CHARACTERISTICS OF PNEUMATIC STRAIN GAUGE TRANSDUCER

2019 ◽  
pp. 48-52
Author(s):  
A. P. Vasytenko ◽  
A. Yu. Tarakhovskiy
Keyword(s):  
Strain Gauge ◽  
Electrical Signal ◽  
Design Parameters ◽  
Measuring Instruments ◽  
Static Characteristics ◽  
Air Jet ◽  
Jet Impact ◽  
Measurement Results ◽  
Strain Gauge Transducer ◽  
Processing Of Measurement Results

Measuring instruments that implement the pneumatic principle of measurement, have a number of significant advantages: small dimensions of the measuring equipment, allowing to produce multiparameter control in a limited size of the working area, insensitivity to vibration, simplicity of design and reliability. The disadvantage of pneumatic converters is a discrete output electrical signal, which does not allow the processing of measurement results. In this regard, it seems appropriate to investigate the pneumatic-electric Converter, which includes a jet pneumatic and differential strain gauges, which allows to obtain an analog electrical signal at the output. The article describes the design and principle of operation pneumoenteritis Converter to control the diameter of the part. Pneumotensometric Converter converts the change in the diameter of the part in the movement of the nozzle, which causes a change in the force of the air jet on the beam, its deformation and, accordingly, a change in the resistance of he strain gauge. An expression describing the stoic characteristic of the transducer and allowing to determine the force of the air jet impact on the load cell from the gap between the nozzle and the beam, the air pressure and the nozzle diameter is given. The results of modeling the static characteristics of the Converter at different combinations of design parameters are given, the values of straight sections of characteristics and sensitivity are determined, their comparative evaluation is given.

Precision Transducer for High Pressure Infrared Measurements

1969 ◽  
Vol 23 (2) ◽  
pp. 157-159 ◽  
Author(s):  
J. V. Fox ◽  
H. W. Prengle
Keyword(s):  
High Pressure ◽  
High Precision ◽  
Strain Gauge ◽  
Freezing Point ◽  
Mathematical Function ◽  
Ir Absorption ◽  
Infrared Measurements ◽  
Strain Gauge Transducer ◽  
Pvt Measurements ◽  
Semiconductor Strain

An externally mounted high pressure semiconductor strain gauge transducer of high precision is described which was used in connection with liquid ir absorption and PVT measurements up to 10 000 atm pressure. The transducer is nonlinear, but can be calibrated by a three point procedure, one point of which is the freezing point of mercury at 0°C, and fit to a derived mathematical function. The precision of the device is approximately 0.8 atm, with a repeatability of 5.5 parts in 10 000, at a level of 10 000 atm.

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