Modelling of the Influence of Tensile Test Speed on the Fracture Load

Mahmoud, Gouda M.; Mohamed, Khaled

doi:10.32802/asmscj.2019.368

Cited by 2 publications

(1 citation statement)

References 8 publications

(8 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where, E is the impact energy of sample, 𝑚 is the weight of ball, 𝑔 is the gravity, and ℎ is the height of dropping [2], refer to Figure 1 [3].…”

Section: 𝐸 = 𝑚𝑔ℎmentioning

confidence: 99%

Metrological Characterization of Spring Impact Hammer Calibration

Khaled,

Hegazy

2023

I2M

View full text Add to dashboard Cite

This article presents a proposed approach and mechanism for calibrating a spring hammer. The metrological characterization of the calibration results was discussed and the uncertainty of this measurement was evaluated. The proposed approach demonstrates a more applicable calibration method using a high accuracy force transducer to measure the spring force and a high-precision deflection measuring instrument to measure the corresponding deflection. Different relative errors are calculated to detect the applicability and accuracy of this approach. The overall relative expanded uncertainty is presented based on the introduced repeatability and reproducibility errors, side by side with the uncertainties of the reference force transducer and length measuring device used. The proposed calibration technique is used to calibrate both types of spring impact hammers; the multi-step hammer and the single-step hammer. Two examples for calibrating multistep hammer and another single-step hammer are presented with relative expanded uncertainties from 0.36% up to 5.37%.

show abstract

“…where, E is the impact energy of sample, 𝑚 is the weight of ball, 𝑔 is the gravity, and ℎ is the height of dropping [2], refer to Figure 1 [3].…”

Section: 𝐸 = 𝑚𝑔ℎmentioning

confidence: 99%

Metrological Characterization of Spring Impact Hammer Calibration

Khaled,

Hegazy

2023

I2M

View full text Add to dashboard Cite

show abstract

Dynamic strain gradient brittle fracture propagation: comparison with experimental evidence

Maksimov,

Placidi,

Trujillo

et al. 2024

NHM

View full text Add to dashboard Cite

<p>This paper presented a physico-mathematical model for dynamic fracture propagation in brittle materials with a purely continuum mechanics hemi-variational-based strain gradient theory. As for the quasi-static case, the simulation results, obtained by means of finite elements, revealed that strain gradient effects significantly affected the fracture propagation, leading to finite fracture thickness that was independent of the mesh size. It was also observed that nonsymmetric loading rate lead to a deviation from standard mode-Ⅰ crack propagation that cannot be revealed in the quasi-static case. The model results were compared against experimental data from fracture tests on notched specimens taken from the literature. The comparison showed good agreement between the model predictions and the experimental measurements. The presented model and simulation results can be useful in the design and optimization of structural components subjected to dynamic loading conditions.</p>

show abstract

Modelling of the Influence of Tensile Test Speed on the Fracture Load

Cited by 2 publications

References 8 publications

Metrological Characterization of Spring Impact Hammer Calibration

Metrological Characterization of Spring Impact Hammer Calibration

Dynamic strain gradient brittle fracture propagation: comparison with experimental evidence

Contact Info

Product

Resources

About