Performance Assessment of a Developed Brake Frame Based on the Application of a Proposed Equivalent Model in a Net Protection System for Debris Flow

Kim, Sung-Tae; Hong, Seok-Won; Kim, Jung-Joo; Yoo, Hee Koo

doi:10.3390/app8071101

Cited by 3 publications

(1 citation statement)

References 13 publications

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“…Some works have aimed at analyzing the squealing of brakes, with the aim of reducing this effect by using theoretical and experimental approaches [13][14][15]. Some other works have specifically aimed at studying the contact mechanics and wear behavior of the brakes [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Experimental Wear Characterization and Durability Enhancement of an Aeronautic Braking System

Logozzo

Valigi

2023

Applied Sciences

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This paper is focused on the experimental wear characterization of an electromagnetic braking system used for helicopters. The characterization was performed through the evaluation of some monitoring parameters during endurance tests on a test bench and through the visual analysis of the worn surfaces after the tests. The monitoring parameters were the engagement threshold voltage, the release threshold voltage, the inductance, and the braking torque, which are directly correlated with the wear progress. The visual analysis allowed the assessment of the wear extent and the distribution of wear particles at the interfaces. The test performed on the initial base configuration, having ten springs and carbon fibers as friction materials, demonstrated that the braking system had insufficient durability in terms of actuation cycles. The results allowed the design of two new configurations based on different brake architectures and on different friction pairs. One of the new configurations was based on a reduction in the number of springs (eight-spring configuration), and the second one was based on the employment of a different friction material (NAO configuration). Both of these optimized configurations showed enhanced durability and wear resistance, but only the second one showed sufficient durability with respect to the requirements and was defined as acceptable. The final results showed a durability of 3000 actuation cycles for the base configuration, 4385 for the eight-spring configuration, and 35,223 for the NAO configuration. Nevertheless, the analysis of results allowed the cause of the wear phenomena to be studied and eventual further improvements in the system to be suggested.

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Section: Introductionmentioning

confidence: 99%

Experimental Wear Characterization and Durability Enhancement of an Aeronautic Braking System

Logozzo

Valigi

2023

Applied Sciences

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Estimation of Anchor Capacity in Net Protection System with Brake Frame for Debris Flow Based on Impact Energy

Jafri²,

Hong³

et al. 2022

KSCE J Civ Eng

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A Study of Landslide Susceptibility Assessment and Trend Prediction Using a Rule-Based Discrete Grid Model

Duan,

Zhang,

Zhao

et al. 2024

Remote Sensing

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Landslides are common natural disasters in mountainous regions, exerting considerable influence on socioeconomic development and city construction. Landslides occur and develop rapidly, often posing a significant threat to the safety of individuals and their property. Consequently, the mapping of areas susceptible to landslides and the simulation of the development of such events are crucial for the early warning and forecasting of regional landslide occurrences, as well as for the management of associated risks. In this study, a landslide susceptibility (LS) model was developed using an ensemble machine learning (ML) approach which integrates geological and geomorphological data, hydrological data, and remote sensing data. A total of nine factors (e.g., surface deformation rates (SDF), slope, and aspect) were used to assess the susceptibility of the study area to landslides and a grading of the LS in the study area was obtained. The proposed model demonstrates high accuracy and good applicability for LS. Additionally, a simulation of the landslide process and velocity was constructed based on the principles of landslide movement and the rule-based discrete grid model. Compared with actual unmanned aerial vehicle (UAV) imagery, this simulation model has a Sørensen coefficient (SC) of 0.878, a kappa coefficient of 0.891, and a total accuracy of 94.12%. The evaluation results indicate that the model aligns well with the spatial and temporal development characteristics of landslides, thereby providing a valuable reference basis for monitoring and early warning of landslide events.

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Performance Assessment of a Developed Brake Frame Based on the Application of a Proposed Equivalent Model in a Net Protection System for Debris Flow

Cited by 3 publications

References 13 publications

Experimental Wear Characterization and Durability Enhancement of an Aeronautic Braking System

Experimental Wear Characterization and Durability Enhancement of an Aeronautic Braking System

Estimation of Anchor Capacity in Net Protection System with Brake Frame for Debris Flow Based on Impact Energy

A Study of Landslide Susceptibility Assessment and Trend Prediction Using a Rule-Based Discrete Grid Model

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