A Review on the Effect of Impact Toughness and Fracture Toughness on Impact-Abrasion Wear

Zambrano, O.A.

doi:10.1007/s11665-021-05960-5

Cited by 22 publications

(3 citation statements)

References 98 publications

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“…Thus, it is yet to be determined whether the impact levels in industrial mills that cannot cause macro-scale fractures in white cast irons do or do not promote microfracture wear mechanisms. A review by Zambrano [54] also found similar results. In addition, Radziszewski [55] found that the impact velocities attained in laboratory tests are low compared to industrial applications and illustrate only low energy impacts.…”

Section: Impact Damage Mechanismsupporting

confidence: 54%

A Review of the Grinding Media in Ball Mills for Mineral Processing

Matsanga,

Nheta,

Chimwani

2023

Minerals

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The ball mill is a rotating cylindrical vessel with grinding media inside, which is responsible for breaking the ore particles. Grinding media play an important role in the comminution of mineral ores in these mills. This work reviews the application of balls in mineral processing as a function of the materials used to manufacture them and the mass loss, as influenced by three basic wear mechanisms: impact, abrasion, and corrosion. The effect of grinding media geometries and density on the mill performance was also reviewed to determine what the research has recommended as the most suitable grinding media for different grinding applications. Although considerable work has been carried out in that area, the influence of grinding media shape on the liberation of minerals, as well as the effect of various mill conditions on the performance of mixed grinding media shapes, are still poorly understood. Thus, the review opens up opportunities for further research to improve the grinding processes, especially considering that even a slight improvement in the process efficiency significantly reduces the production costs.

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Section: Impact Damage Mechanismsupporting

confidence: 54%

A Review of the Grinding Media in Ball Mills for Mineral Processing

Matsanga,

Nheta,

Chimwani

2023

Minerals

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“…The first approach works with the evaluation of the notch toughness, A k , which is related to the crack size and fracture toughness. The second energy approach takes into consideration the critical energy, which is required to expand the crack by a unit area [ 50 ]. The process is also affected by interfacial adhesion, particle loading, and external factors, such as velocity of impact, temperature, etc.…”

Section: Resultsmentioning

confidence: 99%

Injection-Molded Isotactic Polypropylene Colored with Green Transparent and Opaque Pigments

Janostik

Senkerik

Maňas

et al. 2023

IJMS

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Polypropylene (PP) belongs among the most important commodity plastics due to its widespread application. The color of the PP products can be achieved by the addition of pigments, which can dramatically affect its material characteristics. To maintain product consistency (dimensional, mechanical, and optical), knowledge of these implications is of great importance. This study investigates the effect of transparent/opaque green masterbatches (MBs) and their concentration on the physico-mechanical and optical properties of PP produced by injection molding. The results showed that selected pigments had different nucleating abilities, affecting the dimensional stability and crystallinity of the product. The rheological properties of pigmented PP melts were affected as well. Mechanical testing showed that the presence of both pigments increased the tensile strength and Young’s modulus, while the elongation at break was significantly increased only for the opaque MB. The impact toughness of colored PP with both MBs remained similar to that of neat PP. The optical properties were well controlled by the dosing of MBs, and were further related to the RAL color standards, as demonstrated by CIE color space analysis. Finally, the selection of appropriate pigments for PP should be considered, especially in areas where dimensional and color stability, as well as product safety, are highly important.

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“…Impact strength characterizes the ability of a material to absorb energy in the process of impact fracture, and is one of the indicators used to measure the toughness of a material [ 44 ]. As shown in Figure 6 a, the three-dimensional impact samples were injection molded by a micro injection machine.…”

Section: Resultsmentioning

confidence: 99%

The Impact of Artificial Marble Wastes on Heat Deflection Temperature, Crystallization, and Impact Properties of Polybutylene Terephthalate

Feng

Fang

et al. 2021

Polymers

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As artificial marble is abundant and widely used in residential and commercial fields, the resource utilization of artificial marble wastes (AMWs) has become extremely important in order to protect the environment. In this paper, polybutylene terephthalate/artificial marble wastes (PBT/AMWs) composites were prepared by melt blending to maximize resource utilization and increase PBT performance. The research results showed that the filling of AMWs was beneficial to the improvement of PBT-related performance. X-ray diffraction analysis results indicated that after filling AMWs into the PBT matrix, the crystal structure of PBT was not changed. Heat deflection temperature (HDT) analysis results indicated that the HDT of PBT composites with 20 wt% AMWs reached 66.68 °C, which was 9.12 °C higher than that of neat PBT. Differential scanning calorimetry analysis results showed that heterogeneous nucleation could be well achieved when the filling content was 15 wt%; impact and scanning electron microscope analysis results showed that due to the partial core-shell structure of the AMWs, the impact strength of PBT was significantly improved after filling. When the filling amount was 20 wt%, the impact strength of the PBT composites reached 23.20 kJ/m2, which was 17.94 kJ/m2 higher than that of neat PBT. This research will not only provide new insights into the efficient and high-value utilization of AMWs, but also provide a good reference for improved applications of other polymers.

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A Review on the Effect of Impact Toughness and Fracture Toughness on Impact-Abrasion Wear

Cited by 22 publications

References 98 publications

A Review of the Grinding Media in Ball Mills for Mineral Processing

A Review of the Grinding Media in Ball Mills for Mineral Processing

Injection-Molded Isotactic Polypropylene Colored with Green Transparent and Opaque Pigments

The Impact of Artificial Marble Wastes on Heat Deflection Temperature, Crystallization, and Impact Properties of Polybutylene Terephthalate

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