17 0 0 0 OA チタンおよびチタン合金の楽器への応用
10 0 0 0 OA トランペットのチタン合金製マウスピース形状による振動・音響特性
- 著者
- 堀畑 聡 新家 光雄 野崎 隆宏 赤堀 俊和 鈴木 亨 曽根 圭司 庭田 俊一 福田 徳久
- 出版者
- 一般社団法人 日本機械学会
- 雑誌
- 日本機械学会論文集C編 (ISSN:18848354)
- 巻号頁・発行日
- vol.79, no.803, pp.2240-2249, 2013 (Released:2013-07-25)
- 参考文献数
- 6
- 被引用文献数
- 1
Traditionally, the metal mouthpieces of trumpets have been generally made of brass. However, for musicians who suffer from metal allergies, the use of the mouthpiece sometimes lead to inflammation of the lip if they are taking part in a long performance. This problem can be solved by using allergy-free pure titanium (titanium) and its alloys as the material for the mouthpiece. Therefore, a titanium alloy composed of non-toxic and allergy free elements has been designed. However, because their heat conductivity is generally poor, and they contain α phase with its HCP (hexagonal closed packed structure having structure, which restrict slip systems, forming them into suitable shapes can be very difficult. Therefore, precision casting method, where only final finishing was conducted by machining, applied for fabricating the mouthpieces of trumpets. Important considerations for use in musical instruments are the material characteristics and the sound characteristics of mouthpieces made of titanium alloy. Research on the material characteristics of titanium alloy mouthpieces is currently being undertaken. On the other hand, the sound characteristics of mouthpieces made of titanium alloy have not been examined sufficiently. In this study, the sound and the vibration characteristics of two kinds of mouthpieces made of titanium and Ti-Nb was examined. The adaptability of these materials for use in mouthpieces of trumpets was discussed by comparing the sound characteristics of mouthpieces of trumpets made of titanium, Ti-Nb, and brass.
5 0 0 0 OA 金管楽器用アレルギーフリーチタン合金の開発とその特性
- 著者
- 赤堀 俊和 新家 光雄 仲井 正昭 堤 晴美 野崎 隆宏 堀畑 聡 鈴木 亨 曽根 圭司
- 出版者
- 一般社団法人 軽金属学会
- 雑誌
- 軽金属 (ISSN:04515994)
- 巻号頁・発行日
- vol.58, no.11, pp.604-610, 2008-11-30 (Released:2008-12-30)
- 参考文献数
- 13
- 被引用文献数
- 1
Binary titanium alloys containing Nb or Ta, which are allergy-free and non-toxicity elements, were fabricated, and then the possibility of their application to various music instruments made of brass was investigated by the evaluation of corrosion characteristics, elastic modulus-density ratio (E/ρ), resonance frequency (f) and internal friction (Q−1) . The practical models of the mouthpieces of the trumpets made of the binary titanium alloys were also fabricated by precision casting method in order to compare directly with the sound characteristics of those made of brass and commercially pure Ti. The critical current density for the passivation of the Ti–Nb and Ti–Ta system alloys is approximately 40% lower than that of brass and nearly equal to or a little higher than that of commercially pure Ti. The Q−1 of the Ti–Nb and Ti–Ta system alloys with α″ phase drastically increase. The E/ρ and f of the Ti–Nb and Ti–Ta system alloys exhibit a positive relationship. The sound characteristics of practical mouthpieces of trumpets for a bass instrument can be controlled by changing the E/ρ and f of the alloys.
1 0 0 0 OA 骨の力学機能に立脚した脊椎固定用異方性材料デザイン
- 著者
- 新家 光雄 仲井 正昭 劉 恢弘 稗田 純子 趙 研 東 健司 上杉 徳照 石本 卓也 今野 豊彦 佐藤 和久 赤堀 俊和
- 出版者
- 名城大学
- 雑誌
- 基盤研究(A)
- 巻号頁・発行日
- 2012-04-01
β型低弾性率Ti-29Nb-13Ta-4.6Zr合金(TNTZ)およびTi-Cr系合金につき、特にユビキタス元素である酸素(O)に注目し、従来では脆化をもたらすと考えられてきた高O濃度としたり、CrおよびO量を制御することにより、ω相、α”マルテンサイトあるいは双晶を適切に誘起すること、さらには超塑性歪加工、微粒子衝突やキャビテーションピーニングを施すことにより、両合金の高強度・高延性化、高疲労強度化、自己ヤング率調整機能の付与を達成した。TNTZでは、単結晶を用いて変形挙動を解析し、同合金単結晶が塑性的には異方性を示す、弾性的には等方性を示すことを見出した。
- 著者
- 新家 光雄 赤堀 俊和 眞鍋 哲典 竹内 力 桂 成基 福井 壽男 鈴木 昭弘
- 出版者
- 社団法人日本鉄鋼協会
- 雑誌
- 鐵と鋼 : 日本鐡鋼協會々誌 (ISSN:00211575)
- 巻号頁・発行日
- vol.90, no.3, pp.154-161, 2004-03-01
- 被引用文献数
- 1
科研費報告書収録論文(課題番号:15200035/研究代表者:新家光雄/ナノ変調構造制御による生体用低弾性率型超弾塑性機能チタン材料の創製)