| JaLCDOI | 10.18926/15553 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_98.pdf |
| Author | Kikuchi Susumu| Tomiya Nobuaki| |
| Abstract | Demand and supply of service are complicatedly related with the balance between fixed capital and circulating capital, movement to the left or right side from a break-even point, and other factors. If there is the disproportion between demand and supply of service, the waiting line to take a service will vary, and in some cases, fixed equipment will not be employed effectively. This report presents trial manufacture of the experimental equipment for waiting line problems. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 98 |
| End Page | 105 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307672 |
| JaLCDOI | 10.18926/15556 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_116.pdf |
| Author | Takamatsu Takeichiro| Sayama Hayatoshi| |
| Abstract | The identification or model building of system is the important problem for the dynamic optimization of chemical plant and it is desired that this mathematical model can be determined as quickly and as exactly as possible from experimental or operating data. Recently the identification of linear system has been studied, but there have been few papers on nonlinear systems. Especially, no approaches can be found to identify effectively a chemical reaction process which is a nonlinear and nonisothermal system. Except for the case in which the linearized model is enough to represent the approximate dynamic behaviour of the plant, system should be directly represented by nonlinear mathematical model in general. In this paper, the gradient method was applied to identify a nonlinear system. In this method, the parameters to be chosen optimally are regarded as timeinvariant control variables and they are numerically determined by using a high speed digital computer (KDC-I). As a numerical example, we choose a continuous stirred tank reactor with the first order exothermic reaction and show the procedure to determine the three parameters, that is, the order of reaction, the values of activation energy and frequency factor. It should be emphasized that this approach makes it possible to construct the mathematical model of nonisothermal chemical reaction processes only from input and output data. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 116 |
| End Page | 119 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307194 |
| JaLCDOI | 10.18926/15550 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_78.pdf |
| Author | Himei Toyoji| Inoue Jyunichi| Fukumori Kooichi| |
| Abstract | The operation, mainly in a steady state, of a half controlled single-phase bridge circuit with a finite inductive load, has been treated analytically. Some operation features of particular bridge circuits are discussed. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 78 |
| End Page | 83 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307828 |
| JaLCDOI | 10.18926/15552 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_91.pdf |
| Author | Kikuchi Susumu| Matuda Motoi| |
| Abstract | As has been told, industry is roughly composed of three elements: man, money and machine. Along with a macroscopically slow development in social democracy on each microscopically quantum stage, management and administration in almost enterprise they have been exceptionally concerned with one after another. From machine to man, from man to money and then from money to machine, cyclically the tentative subject has been transfered as though we are nondescending the spiral stair with ever divergent radii. (Fig.1) |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 91 |
| End Page | 97 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307525 |
| JaLCDOI | 10.18926/15547 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_59.pdf |
| Author | Yamashista Yuhiko| Yokoyama Fumiyoshi| Monobe Kazuo| |
| Abstract | Fujiwara's oriented crystallization method was applied to poly (ethylene oxide) to obtain a uniform texture composed of parallel fibrils which correspond to the structure of a radial direction of spherulites. Two different x-ray diffraction patterns in crystallite orientation of the spherulite radius were obtained. From these patterns and crystallization conditions it could be determined that the spherulite radius has a [401] rotation axis below about 50℃ and two [421] and [421]rotation axes above about 50℃. A reasonable interpretation was given for these two ways of spherulitic crystallization, based on the growth features of lamellar crystals of poly (ethylene oxide). That is, it is concluded that a second order transition in poly (ethylene oxide) lamellar crystals near the temperature of 50℃ is responsible for the change of the rotation axis in spherulite radius. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 59 |
| End Page | 62 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307666 |
| JaLCDOI | 10.18926/15555 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_110.pdf |
| Author | Takamatsu Takeiciro| Sayama Hayatoshi| Tonoike Takao| |
| Abstract | The batch chemical reaction is chosen as the process model to be optimized and the rate constants are functions of pressure only, as the reactions are assumed to occur isothermally. The time optimal control problem considered here means to determine the minimum time path from the given initial compositions to desired final compositions by manipulating the process pressure. A gradient method or a steepest-ascent method is applied to determine the control variable program by using the high speed digital computer. Numerical solutions are presented for the following three cases: (1) no constraint on the operating pressure ...... open and matched terminal constraint. (2) constraint on the operating pressure ...... open terminal constraint. (3) constant operating pressure ...... open terminal constraint. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 110 |
| End Page | 115 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307978 |
| JaLCDOI | 10.18926/15543 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_44.pdf |
| Author | Takeda Akira| Torii Sigeru| |
| Abstract | Acetylation of γ,γ-dimethyl-α,β-dicarbethoxybutyrolactone in benzene in the presence of sodium hydride was attempted. The structure of the condensation product was assigned to O-acetyl derivative, which was converted into γ,γ-dimethyl-β-carbethoxy-α-carboxybutyrolactone whose structure is also discussed by IR spectrum. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 44 |
| End Page | 46 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307861 |
| JaLCDOI | 10.18926/15549 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_70.pdf |
| Author | Nakata Takayoshi| Ishihara Yoshiyuki| Moriyasu Tadataka| |
| Abstract | In this paper, we describe the way to compute circuit constants of the impulse voltage generator by means of the digital computer, when an impulse voltage waveform is given. The definition of waveform is to be revised, and this definition is adopted to our computation. From the results, we can see the influence of revising definition upon circuit constants. We also devised graphs, from which we can easily determine the L-C-R circuit constants. (see Fig.2(a)) |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 70 |
| End Page | 77 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307723 |
| JaLCDOI | 10.18926/15551 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_84.pdf |
| Author | Misaki Takayoshi| Kato Osamu| |
| Abstract | Described in this paper are the design considerations of the simple element of the two-dimensional RC distributed constant circuit and its applications for the analysis of the transient heat conduction problems in engineering work. This element is formed by coating with the resistive film the upper surface of the high permittivity ceramics plate whose back side to be silvered. In addition to a resistivity of every elementary area within the resistive film, there exists capacitive coupling between the area and ground. This element can be regarded as a typical two-dimensional RC distributed system and utilized as a simulator for the same dimensional heat conduction system. It has a convenience and high accuracy for the analysis of the transient heat conduction problems in engineering work. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 84 |
| End Page | 90 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307680 |
| JaLCDOI | 10.18926/15540 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_29.pdf |
| Author | Takahashi Teruo| |
| Abstract | In this report, gas absorption by a rotating cylindrical liquid jet, whose water traveling length is short, is considered experimentally. Experiments of absorption are proceeded in pure C0(2) gas and water at 20℃: C0(2) gas is cross-currently contacted with a liquid jet. From experimental results, absorption rate was observed to be large immediately after liquid was spouted from small hole drilled through rotating cylinder. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 29 |
| End Page | 36 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307556 |
| JaLCDOI | 10.18926/15545 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_51.pdf |
| Author | Moriwake Tosio| |
| Abstract | Condensation of σt -butyl chloroacetate and ketones by means of magnesium in ether or benzene alone was carried out but the excellent yields of P-hydroxy ester could not be obtained, and the results of the condensation of t -butyl bromoacetate and ketones by means of magnesium and mercuric chloride in benzene were also disappointing. When a mixture of benzene and ether was used as solvent in the condensation of t-butyl chloroacetate and ketone in the presence of magnesium and mercuric chloride, the yields of p-hydroxy esters from cyclohexanone and methyl isobutyl ketone were 62 and 71 % respectively, and were comparable with those of other condensing methods. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 51 |
| End Page | 53 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307140 |
| JaLCDOI | 10.18926/15544 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_47.pdf |
| Author | Takeda Akira| Wada Satosi| Ohmura Yutaka| |
| Abstract | a-Chloro-N-arylisobutyrimidyl chloride (I) reacted with ethyl sodiomalonate to afford N-aryl-2,2-dimethyl-3 carbethoxysuccinimide. This reaction seems to proceed in a different mechanism from that of the synthesis of tetronic acids(2) and is supposed to involve a primary attack of the carbanion at the a-carbon atom of the chloride followed by the cyclization. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 47 |
| End Page | 50 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307888 |
| JaLCDOI | 10.18926/15546 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_54.pdf |
| Author | Moriwake Tosio| |
| Abstract | Condensation of 6-methoxy- and 6-methylthio-2-propionaphthone with t-butyl α-bromoisobutyrate gave the corresponding t-butyl β-hydroxy esters in yields of 80 and 84% respectively. The treatment of the β-hydroxy esters with iodine in the presence of red phosphorus in boiling acetic acid effected reductive cleavage to produce 6-hydroxy- and 6-methylthio-α, α-dimethyl-β-ethyl-2 naphthalenepropionic acid in yields of 33 and 34% respectively. Reduction of the former ester in the presence of palladium-charcoal in acetic acid gave α, α-dimethyl-β-ethyl-6-methoxy-2-naphthalenepropionic acid in a 49% yield. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 54 |
| End Page | 58 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307698 |
| JaLCDOI | 10.18926/15554 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_106.pdf |
| Author | Kikuchi Susumu| Harano Hiromi| Miyazaki Yoshiyuki| |
| Abstract | In this experiment the comparison was studied between the muscular and the nervous fatigue and the flicker phenomenal value of the optic nerve. In order to measure the physical fatigue, various methods have been reported by many authers. In this experiment, a quantification of the fatigue was tried though the relation between the amount of mental activity and the FF (flicker frequency), which is useful in physical fatigue measurement with the change in respiration and pulse. In measuring the FF, respiration and pulse caused by physical work, it shows that the these three measured values are somewhat exponential, which might be called the exponential accumlation of fatigue. In mental activity slight relation was also found between fatigue and learning. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 106 |
| End Page | 109 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307356 |
| JaLCDOI | 10.18926/15537 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_1.pdf |
| Author | Honda Kazuo| Konaga Tetsuro| |
| Abstract | In the field of mechanical engineering, the need for a simple but effective way of evaluating the fatigue strength and lifetime of structural materials is an important problem with which the design engineers have faced. Accordingly, a cunsiderable amount of investigations have been made in this field. However, the basic nature of fatigue damage and the conditions which lead to the initiation and propagation of fatigue cracks are not sufficiently understood. Nor any satisfactory method of assessing the exact state of fatigue damage has yet been found. X-ray diffraction technique is not a new as the method of experimental study, but has often been adopted for direct and non-destructive observations of change in the local structures of crystalline materials at fundamental research. X-ray technique is one of the most powerful means to investigate the changes of microscopic- structure due to external forces, considering the fatigue phenomena occur on the surface of materials. Accordingly, one of the authors have studied the relations of half-value breadth of X-ray diffraction lines, residual stresses and hardness and number of cycles of fatigue stresses in detail for various sorts of engineering metallic materials. In the results of a number of experiments, it has been found that the variation in half-value breadth showed very regular relation with number of stress cycles, the authors have reported that the lifetime of materials in fatigue could be predicted. Consequently, it needs to investigate whether or not this predicting method is fitted for alloy containg α and β phase, moreover, it is interesting to make clear the fatigue mechanism of such materials which are present two phases having the different yield stress and type of crystal structure. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 1 |
| End Page | 12 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307488 |
| JaLCDOI | 10.18926/15539 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_23.pdf |
| Author | Yamada Toshiro| Kitagawa Shigeru| |
| Abstract | For assessing the qualities of sheet metal for deep-drawing by the tension test, γ value is adopted generally. However, it is difficult and complicated to obtain the precise value of it. In order to obtain the value precisely and easily, the authors have made trialy the devices to measure directly the elongation and the reductions of width and thickness; these devices are transducers to which the electrical resistance strain gauges are applied. By using these devices, precise, continuous, multipoint and quick measurement can be done. It has been clarified by the continuous measurements that γ values are not the same relating to the elongations. It is recommended that one uses γ value obtained at about 25% elongation. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 23 |
| End Page | 28 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307551 |
| JaLCDOI | 10.18926/15538 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_13.pdf |
| Author | Kashiwada Yukio| Akiyama Koichi| |
| Abstract | In order to make clear how the efflux angle changes in a small crankcase scavenged engine cylinder and in a large loop scavenged engine cylinder, the inlet flow pattern in the single cycle model cylinder has been observed by a high speed motion camera. In general, the scavenging air stream is not effluent in the designed direction of the scavenging port at comparatively slight opening, and the efflux angle changes in proportion to port opening advance. In a small crankcase scavenged engine cylinder, to keep the scavenging air stream in the direction of the scavenging port it is effective to incline the scavenging air passage between the crankcase and the cylinder, and to make thicker the cylinder wall where located scavenging port. In a large loop scavenged engine cylinder to coincide the scavenging air stream with the direction of the scavenging port in the early stage of the scavenging, it has an effect to set the guide plate the position of 1/2 at port height. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 13 |
| End Page | 22 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307846 |
| JaLCDOI | 10.18926/15548 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_63.pdf |
| Author | Mine Tadao| Yamamoto Tatuma| Baba Yukinobu| |
| Abstract | The well-known steady state solution of nonlinear oscillatory circuits based on the use of Fourier series, the so-called harmonic balance, is a powerful method because of its wide applicability. Yet, this method has not only difficulties to solve transcendental equations or algebraic equations of higher orders, but gives no transient state solution. The harmonic approximation and the extended harmonic approximation defined in this report are linearization methods which give approximations of steady state and transient state simultaneously. Furthermore the method enables an unification and extension of miscellaneous linearization methods. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 63 |
| End Page | 69 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307143 |
| JaLCDOI | 10.18926/15542 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_37.pdf |
| Author | Takahashi Katsuaki| Tanioka Mamoru| Yoshio Tetsuo| |
| Abstract | Studies were carried out in order to know in some detail the transport phenomena through the interface in the viscous liquid moving in laminar flow. Experiments were carried out using ca. 88% glycerin solution, one added with an acid, and the other with alkali together with a small amount of phenolphthalein. Acidic glycerin solution was supplied to a long transparent cuvette of rectangular cross section through which the liquid was made to move slowly enough to establish the laminar flow, thin cords of coloured basic solution were introduced in the direction normal to the axis of flow at regular time intervals. The so obtained patterns of bending cords shortening in regular succession were photographed also at regular time intervals. The authors attribute the origin of the changing patterns of the cords to the velocity gradient existing in the acidic solution which accelerates the diffusion by increasing the concentration gradient near the cords as well as the increase of the interfacial area, and also the decrease of the thickness of the cords. Based on these idea a mathematical analysis was carried out and was obtained an equation which gives the change of the concentration distribution of two dimensional cords. Fair agreement was obtained between the results of mathematical analysis and those of experiments. Furthermore, the influence of the thickness of the cords, and that of the velocity gradient as well as of the diffusion coefficient on the concentration at the center of the cords were discussed. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 37 |
| End Page | 43 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307624 |
| JaLCDOI | 10.18926/15557 |
|---|---|
| FullText URL | Mem_Sch_Eng_OU_1_120.pdf |
| Author | Wada Tsutomu| Sawaragi Yosikazu| Yonezawa Yoo| |
| Abstract | We attempt to apply the feedback compensation technics of on-off controller to the pneumatic systems. In this paper, we describe the structure and the action of a new developed pneumatic on-off controller with feedback compensation, and the principle of the special pilot valve which is used in the controller as the on-off element. Next, it is shown analytically and experimentally that the dynamic characteristics of the controller are nearly equal to those of the continuous one which has an infinite proportional gain instead of the on-off element, if the time average of its discontinuous output is treated as the output of the controller. |
| Publication Title | Memoirs of the School of Engineering, Okayama University |
| Published Date | 1966-03-31 |
| Volume | volume1 |
| Issue | issue1 |
| Start Page | 120 |
| End Page | 129 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 120002307543 |
