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自動車用ブレーキパッドの機械的特性および性能に関する調査
Mahmoud A Essam1, Noha M Abdeltawab2, Ahmed Y Shash2,3
1Mechanical Engineering Department, Higher Technological Institute (HTI), 10th of Ramadan City, Egypt. mahmoud.elsefy@hti.edu.eg.
Scientific reports
|September 1, 2025
まとめ
この研究では,3つの粉末金属製のブレーキパッドを比較した. BP1は,より優れたブレーキ力と摩擦力を提供したが,より高い磨き,ノイズ,振動,BP3は耐久性と静かな動作に優れていた.
科学分野:
- 材料科学
- トリボロジー
- 粉末金属学
背景:
- ブレーキパッドは車両の重要な安全部品です.
- 粉末金属工学は,高度な摩擦材料を開発するための汎用的な経路を提供します.
- ブレーキパッドの性能を最適化するには,摩擦,磨き,ノイズ,振動のバランスをとる必要があります.
研究 の 目的:
- 粉末金属学に基づく3種類のブレーキパッド (BP1,BP2,BP3) の性能を評価し,比較する.
- 質量損失,硬さ,ブレーキ力,摩擦係数 (COF),ノイズ,振動を含む主要な性能指標を分析する.
- それぞれの配列が特定の用途に適しているかどうかを判断する.
主な方法:
- 粉末金属製の3種類のブレーキパッド (BP1,BP2,BP3) を,異なる圧力 (5 bar,8 bar) で試験する.
- 質量損失,硬さ (HRC),ブレーキ力 (N),摩擦係数 (COF),ノイズ (dB),振動 (m/s2) の測定
- SiCとZrO2粒子の原因による三体磨き磨きの磨きメカニズムを分析する.
主要な成果:
- BP1は8バーで最高のブレーキ力 (640.99N) とCOF (0.3873) を示したが,最大の質量損失 (1.2g/h),ノイズ (17.5dB),振動 (0.743m/s2) も示した.
- BP3は,最も低い質量損失 (1.07g/h,BP1より約20%少ない) を示し,騒音 (14.8dB) と振動 (0.571m/s2) を示し,静かな,長寿命のアプリケーションに適しています.
- BP2は,テストされたすべてのパラメータでバランスの取れた性能プロファイルを示しました. 硬度値はBP1: 46 HRC,BP2: 38 HRC,およびBP3: 44 HRCでした.
結論:
- ブレーキパッドの構成は,摩擦,磨き,NVH (ノイズ,振動,および硬さ) などの性能特性に大きく影響します.
- BP1は高性能ブレーキに最適で,BP3は耐久性と低騒音/振動を優先するアプリケーションに優れています.
- BP2は,性質のバランスが求められる汎用ブレーキシステムに適した妥協案です.
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