Mapping the Potential Liquefaction Area in Yogyakarta City Based on Ground Shear Strain Data

Magneto Rheological Elastomers (MREs) are composite materials based on an elastomer filled by magnetic particles. Anisotropic MRE can be easily manufactured by curing the material under homogeneous magnetic field which creates column of particles. The magnetic and elastic properties are actually coupled making these MREs suitable for energy conversion. From these remarkable properties, an energy harvesting device is considered through the application of a DC bias magnetic induction on two MREs as a metal piece is applying an AC shear strain on them. Such strain therefore changes the permeabilities of the elastomers, hence generating an AC magnetic induction which can be converted into AC electrical signal with the help of a coil. The device is simulated with a Finite Element Method software to examine the effect of the MRE parameters, the DC bias magnetic induction and applied shear strain (amplitude and frequency) on the resulting electrical signal.

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On the nominal transverse shear strain to characterize the severity of creasing

TAPPI Journal ◽

10.32964/tj17.04.231 ◽

2018 ◽

Vol 17 (04) ◽

pp. 231-240

Author(s):

Douglas Coffin ◽

Joel Panek

Keyword(s):

Shear Strain ◽

Transverse Shear ◽

Elastic Limit ◽

Experimental Results ◽

Transverse Shear Strain ◽

Maximum Strain ◽

Machine Direction ◽

Engineering Approach ◽

Wide Range ◽

Analytic Expression

A transverse shear strain was utilized to characterize the severity of creasing for a wide range of tooling configurations. An analytic expression of transverse shear strain, which accounts for tooling geometry, correlated well with relative crease strength and springback as determined from 90° fold tests. The experimental results show a minimum strain (elastic limit) that needs to be exceeded for the relative crease strength to be reduced. The theory predicts a maximum achievable transverse shear strain, which is further limited if the tooling clearance is negative. The elastic limit and maximum strain thus describe the range of interest for effective creasing. In this range, cross direction (CD)-creased samples were more sensitive to creasing than machine direction (MD)-creased samples, but the differences were reduced as the shear strain approached the maximum. The presented development provides the foundation for a quantitative engineering approach to creasing and folding operations.

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Experimental Characterization of Mechanical Behavior of Cord-Rubber Composites

Tire Science and Technology ◽

10.2346/1.2150974 ◽

1982 ◽

Vol 10 (1) ◽

pp. 37-54 ◽

Cited By ~ 11

Author(s):

M. Kumar ◽

C. W. Bert

Keyword(s):

Response Characteristic ◽

Cord Compression ◽

Complete Characterization ◽

Strain Response ◽

Strain Gages ◽

Experimental Characterization ◽

Rubber Composites ◽

Stress Strain ◽

Strain Data

Abstract Unidirectional cord-rubber specimens in the form of tensile coupons and sandwich beams were used. Using specimens with the cords oriented at 0°, 45°, and 90° to the loading direction and appropriate data reduction, we were able to obtain complete characterization for the in-plane stress-strain response of single-ply, unidirectional cord-rubber composites. All strains were measured by means of liquid mercury strain gages, for which the nonlinear strain response characteristic was obtained by calibration. Stress-strain data were obtained for the cases of both cord tension and cord compression. Materials investigated were aramid-rubber, polyester-rubber, and steel-rubber.

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Modeling of Contact Patch in Dual-Chamber Pneumatic Tires

Tire Science and Technology ◽

10.2346/tire.18.460202 ◽

2018 ◽

Vol 46 (2) ◽

pp. 78-92 ◽

Cited By ~ 2

Author(s):

A. I. Kubba ◽

G. J. Hall ◽

S. Varghese ◽

O. A. Olatunbosun ◽

C. J. Anthony

Keyword(s):

Strain Sensors ◽

Surface Strain ◽

Wireless Data ◽

Data Logger ◽

Dual Chamber ◽

Piezoelectric Polymer ◽

Pure Rolling ◽

Piezoelectric Elements ◽

Strain Data ◽

Deformation Patterns

ABSTRACT This study presents an investigation of the inner tire surface strain measurement by using piezoelectric polymer transducers adhered on the inner liner of the tire, acting as strain sensors in both conventional and dual-chamber tires. The piezoelectric elements generate electrical charges when strain is applied. The inner liner tire strain can be found from the generated charge. A wireless data logger was employed to measure and transmit the measured signals from the piezoelectric elements to a PC to store and display the readout signals in real time. The strain data can be used as a monitoring system to recognize tire-loading conditions (e.g., traction, braking, and cornering) in smart tire technology. Finite element simulations, using ABAQUS, were employed to estimate tire deformation patterns in both conventional and dual-chamber tires for pure rolling and steady-state cornering conditions for different inflation pressures to simulate on-road and off-road riding tire performances and to compare with the experimental results obtained from both the piezoelectric transducers and tire test rig.

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Pengaruh Positive Emotion, Time Availability, dan Money Availability terhadap Impulsive Buying Behavior Konsumen Mahasiswa pada Department Store di Kota Yogyakarta

Akmenika: Jurnal Akuntansi dan Manajemen ◽

10.31316/akmenika.v14i1.1012 ◽

2020 ◽

Vol 14 (1) ◽

Author(s):

Faizal Ardiyanto

Keyword(s):

Positive Emotion ◽

Department Store ◽

Department Stores ◽

Buying Behavior ◽

Managerial Implication ◽

Impulsive Buying ◽

Time Availability ◽

Unplanned Buying ◽

Buying In ◽

Yogyakarta City

This research was conducted to examine the influence of positive emotion, time availability, and money availabilty toward impulsive buying behavior both partially and simultaneously. The respondent of this research are university students who have experienced unplanned buying in several department stores at Yogyakarta City. Purposive sampling method was utilized then 102 respondents were chosen. The results indicate that positive emotion, time availability, and money avaiability positively and significantly influence impulsive buying behavior. The three independent variables as stated above, simultaneously influence impulsive buying behavior also. Finally, as the managerial implication stated, it can be concluded that understanding consumers condition related with unplanned buying is important topics in recent years, especially in department store.

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