Calculation of the elastic characteristics of a unidirectional fiber composite by the cross-section method

Abramchuk, S. S.; Dimitrienko, I. P.; Kiselev, V. N.

doi:10.1007/bf00604142

Cited by 2 publications

(2 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Using the cross-section method in the mechanics of materials [ 34 , 35 ], the PVC tube is made up of infinite cross sections. Extracting a cross section of the PVC tube in the sliding layer, ∆y is the distance from the point B to the cross section( Figure 2 ), while ∆y = 0 at point B, and ∆y = l at point A.…”

Section: Monitoring Theorymentioning

confidence: 99%

A Laboratory Experimental Study: An FBG-PVC Tube Integrated Device for Monitoring the Slip Surface of Landslides

Wang

Zhang

Chen

et al. 2017

Sensors

View full text Add to dashboard Cite

A new detection device was designed by integrating fiber Bragg grating (FBG) and polyvinyl chloride (PVC) tube in order to monitor the slip surface of a landslide. Using this new FBG-based device, a corresponding slope model with a pre-set slip surface was designed, and seven tests with different soil properties were carried out in laboratory conditions. The FBG sensing fibers were fixed on the PVC tube to measure strain distributions of PVC tube at different elevation. Test results indicated that the PVC tube could keep deformation compatible with soil mass. The new device was able to monitor slip surface location before sliding occurrence, and the location of monitored slip surface was about 1–2 cm above the pre-set slip surface, which basically agreed with presupposition results. The monitoring results are expected to be used to pre-estimate landslide volume and provide a beneficial option for evaluating the potential impact of landslides on shipping safety in the Three Gorges area.

show abstract

Section: Monitoring Theorymentioning

confidence: 99%

A Laboratory Experimental Study: An FBG-PVC Tube Integrated Device for Monitoring the Slip Surface of Landslides

Wang

Zhang

Chen

et al. 2017

Sensors

View full text Add to dashboard Cite

show abstract

“…Although the LSM is onedimensional, the anisotropy in the passive phase does affect the calculation of the effective material properties, particularly because of the high shear attenuation. The effective properties of the passive phase are then calculated using mixing rules for parallel and series arrangements [11]. PSfrag replacements In Figure 4 PSfrag replacements…”

Section: An Anisotropic Passive Phasementioning

confidence: 99%

Theoretical modelling of frequency dependent elastic loss in composite piezoelectric transducers

et al. 2007

View full text Add to dashboard Cite

The large number of degrees of freedom in the design of piezoelectric transducers requires a theoretical model that is computationally efficient so that a large number of iterations can be performed in the design optimisation. The materials used are often lossy, and indeed loss can be used to enhance the operational characteristics of these designs. Motivated by these needs, this paper extends the one-dimensional linear systems model to incorporate frequency dependent elastic loss. The reception sensitivity, electrical impedance and electromechanical coupling coefficient of a 1-3 composite transducer, with frequency dependent loss in the polymer filler, are investigated. By plotting these operating characteristics as a function of the volume fraction of piezoelectric ceramic an optimum design is obtained. A device with a non-standard, high shear attenuation polymer is also simulated and this leads to an increase in the electromechanical coupling coefficient. A comparison with finite element simulations is then performed. This shows that the two methods are in reasonable agreement in their electrical impedance profiles in all the cases considered. The plots are almost identical away from the main resonant peak where the frequency location of the peaks are comparable but there is in some cases a 20% discrepancy in the magnitude of the peak value and in its bandwidth. The finite element model also shows that the use of a high shear attenuation polymer filler damps out the unwanted, low frequency modes whilst maintaining a reasonable impedance magnitude.

show abstract

Calculation of the elastic characteristics of a unidirectional fiber composite by the cross-section method

Cited by 2 publications

References 2 publications

A Laboratory Experimental Study: An FBG-PVC Tube Integrated Device for Monitoring the Slip Surface of Landslides

A Laboratory Experimental Study: An FBG-PVC Tube Integrated Device for Monitoring the Slip Surface of Landslides

Theoretical modelling of frequency dependent elastic loss in composite piezoelectric transducers

Contact Info

Product

Resources

About