How does the CAT graph obtained from drop weight tests in metals works?
Best insight from top research papers
The CAT (Crack Arrest Toughness) graph obtained from drop weight tests in metals works by utilizing a drop-weight high-speed tensile testing instrument. This instrument measures the acting force and specimen elongation by tracking the displacement of the drop-weight, enabling the generation of flow curves for metals at varying strain rates. Additionally, the drop-weight method has been successfully applied to industrial alloys for surface tension measurements, providing highly reproducible results. Furthermore, advancements in image segmentation and machine learning technologies have led to the development of automatic evaluation methods for fracture images in metals, enhancing the accuracy and efficiency of identifying ductile and brittle areas in the fracture image. These combined techniques allow for the determination of dynamic elastic-plastic fracture toughness in metals, such as nodular cast iron, under specific stress intensity rates.
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| Papers (5) | Insight |
|---|---|
| The CAT graph in metals from drop weight tests shows dynamic elastic-plastic fracture toughness (JId) at different stress intensity rates (KI), indicating increasing JId with rising KI in nodular cast iron. | |
3 Citations | CAT graph in metals is obtained by measuring drop-weight displacement to calculate force and specimen elongation. This method provides flow curves, validated by finite element simulations, at high strain rates. |
20 Citations | Not addressed in the paper. |
13 Citations | Not addressed in the paper. |
| The paper does not address the specific working mechanism of CAT graphs obtained from drop weight tests in metals. |
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