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Semi-continuous caster for plate

Haga T., Miyazaki K.

Journal of Achievements in Materials and Manufacturing Engineering

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2017

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Vol. 84, nr 2

58--67

EN

Purpose: Development of a semi-continuous caster that can cast a single plate and a clad plate of Al-40%Sn-1%Cu alloy used for sliding bearings. Design/methodology/approach: A semi-continuous caster to cast a single plate and a clad plate directly from molten metal was designed and assembled. The cast single plate has a thickness ranging from 10 mm to 30 mm, a width of 400 mm, and a length of 500 mm to 1,000 mm. The cast clad plate has a thickness ranging from 10 mm to 30 mm, a width of 50 mm, and a length of 300 mm. Findings: The semi-continuous caster successfully produced both a single plate and a clad plate of Al-40%Sn-1%Cu alloy. Influence of casting conditions on the properties of the plate, including the thickness, porosity, and surface quality were investigated in the single plate casting. The mixing and diffusion of the alloy elements at the interface was also investigated in the clad plate casting. Research limitations/implications: The cast Al-40%Sn-1%Cu alloy plate has not yet been tested as a sliding bearing material, so the efficacy of the material still requires investigation. Practical implications: The semi-continuous caster described in this paper enables the “small lot” production made from single and clad plates of aluminium alloy. Originality/value: Development of a semi-continuous caster that can cast both single and clad plates of aluminium alloy. Investigation of the relationship between the casting conditions and plate quality.

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Absolute pitch: Common traits in music and language

Rakowski A., Miyazaki K.

Archives of Acoustics

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2007

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Vol. 32, No. 1

5-16

EN

Absolute pitch in music means an ability of long-term auditory memory to store pitch standards corresponding to within-octave musical pitch classes, based on a generally recognized reference pitch. Such an ability, extremely rare among Western musicians, appears much more commonly among musicians of Asiatic countries. Hypothetically, it is due to either the special forms and early beginnings of musical education (Japan), or to a sort of "preconditioning" of the pitch-memory system in infants and very young children, to treat pitch value as a meaningful element of speech communication (countries with tone languages). Similarities and differences between absolute pitch in music and the memory for pitch value in tone languages will be discussed in detail.

3

Absolute pitch and its implications for music

Miyazaki K.

Archives of Acoustics

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2007

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Vol. 32, No. 3

529–-540

EN

Absolute pitch is defined as an ability to identify musical pitch of single tones presented in isolation. There has been so far little empirical research investigating in detail how people with absolute pitch perceive musical pitch, so absolute pitch is still surrounded by mystery. This article summarizes a series of the author’s experiments exploring the perception of musical pitch and melodies by listeners having absolute pitch. Absolute pitch has been considered an important part of musical ability, and is assumed to be acquired primarily through early music training at the age from 3 to 6 years. However, critically important is relative pitch (pitch relations) on which melodies and harmonic structures are constructed. In contrast, absolute pitch that enables its possessors to name isolated tones is not crucial to music. Moreover, the experimental findings suggest that absolute pitch may sometimes be disadvantageous for musicians since it may, in some cases, be incompatible with processing and learning of relative pitch.