JP2008170263A - Method of measuring rubbing sound at rubbing of fabric - Google Patents
Method of measuring rubbing sound at rubbing of fabric Download PDFInfo
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- JP2008170263A JP2008170263A JP2007003429A JP2007003429A JP2008170263A JP 2008170263 A JP2008170263 A JP 2008170263A JP 2007003429 A JP2007003429 A JP 2007003429A JP 2007003429 A JP2007003429 A JP 2007003429A JP 2008170263 A JP2008170263 A JP 2008170263A
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- 239000004744 fabric Substances 0.000 title claims abstract description 116
- 238000000034 method Methods 0.000 title claims abstract description 40
- 229920003002 synthetic resin Polymers 0.000 claims description 3
- 239000000057 synthetic resin Substances 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 8
- 238000011156 evaluation Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 239000002759 woven fabric Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
Description
本発明は、布帛を摩擦する時に発生する摩擦音を測定する方法に関するものである。 The present invention relates to a method for measuring a friction sound generated when a fabric is rubbed.
従来、ゴルフ等の屋外スポーツを行う際、悪天候時にウインドブレーカーなどの高密度防風撥水織物からなるウエアーを着用することが多い。かかるウエアーは、スポーツを行っている際に布帛の変形や摩擦により摩擦音（ノイズ音）が発生し、スポーツのスコアーやパフォーマンスに悪影響を及ぼすことがあった。 Conventionally, when performing outdoor sports such as golf, wear made of a high-density windproof and water-repellent fabric such as a windbreaker is often worn in bad weather. Such wear may cause frictional noise (noise noise) due to deformation or friction of the fabric during sports, and may adversely affect sports scores and performance.
このような背景のもと、市場には摩擦音を低減した衣料品が多く販売されている。また、かかる摩擦音を評価する方法として、生地を裁断・縫製し製品を作り実際に製品を着用評価する方法、機械的に布帛同士を摩擦させる方法（例えば、特許文献１参照）、人為的に摩擦させる方法などが知られている。 Against this background, many clothing items with reduced friction noise are sold on the market. In addition, as a method for evaluating the frictional sound, a method of cutting and sewing a fabric to make a product and actually wearing the product, a method of mechanically rubbing the fabrics (for example, refer to Patent Document 1), an artificial friction The method of making it known is known.
しかしながら、製品を着用評価する方法では、評価結果がでるまでに時間とコストがかかり、さらには、着用者やサイズにより結果がばらつくという問題があった。また、機械的に布帛同士を摩擦させる方法では、機械的に摩擦させるためには何らかの駆動部が必要となり、駆動部から発生するノイズ音のために、布帛を摩擦する時に発生する摩擦音を正確に測定することが困難であった。また、人為的に摩擦させる方法では、製品を着用評価する方法と同様、着用者により結果がばらつくという問題があった。 However, the method for evaluating wear of a product has a problem that it takes time and cost to obtain an evaluation result, and furthermore, the result varies depending on the wearer and size. Further, in the method of mechanically rubbing the fabrics, some kind of driving unit is required to mechanically rub the fabric, and because of the noise noise generated from the driving unit, the frictional noise generated when rubbing the fabric is accurately detected. It was difficult to measure. In addition, the method of artificially rubbing has a problem that the result varies depending on the wearer as in the method of evaluating wear of a product.
他方、マイクロホンを用いて録音した音を、ＦＦＴ周波数解析装置により解析する方法は従来から知られている（例えば、特許文献２、特許文献３、特許文献４、特許文献５参照）。
On the other hand, methods for analyzing sound recorded using a microphone with an FFT frequency analyzer are conventionally known (see, for example,
本発明は上記の背景に鑑みなされたものであり、その目的は、駆動部を必要とすることなく、布帛を摩擦する時に発生する摩擦音を正確に測定する方法を提供することにある。 The present invention has been made in view of the above background, and an object of the present invention is to provide a method for accurately measuring a frictional sound generated when a fabric is rubbed without requiring a driving unit.
本発明者は上記課題を達成するため鋭意検討した結果、床に対して垂直方向に固定された筒体内部において、布帛を自由落下させ、その際に発生する当該布帛と筒体内壁との摩擦音を、筒体の外部に設置されたマイクロホンを用いて録音することにより、駆動部を必要とすることなく、布帛を摩擦する時に発生する摩擦音を正確に測定することができることを見出し、さらに鋭意検討を重ねることにより本発明を完成するに至った。 As a result of diligent investigations to achieve the above-mentioned problems, the present inventor causes the cloth to freely fall within the cylinder fixed in the direction perpendicular to the floor, and the friction sound between the cloth and the cylinder wall generated at that time. Was recorded using a microphone installed outside the cylinder, and it was found that the frictional sound generated when rubbing the fabric can be accurately measured without the need for a drive unit. As a result, the present invention was completed.
かくして、本発明によれば「布帛を摩擦する時に発生する摩擦音を測定する方法であって、その長手方向が床に対して垂直方向に固定された筒体の内部において、布帛Ａを自由落下させ、その際に発生する、該布帛Ａと前記筒体の内壁との摩擦音を、前記筒体の外部に設置されたマイクロホンを用いて録音することを特徴とする布帛摩擦時の摩擦音測定方法。」が提供される。 Thus, according to the present invention, “a method for measuring a frictional sound generated when rubbing a fabric, the fabric A is allowed to fall freely inside a cylinder whose longitudinal direction is fixed in a direction perpendicular to the floor”. A method for measuring frictional sound during fabric friction, wherein the frictional sound generated between the fabric A and the inner wall of the cylindrical body is recorded using a microphone installed outside the cylindrical body. " Is provided.
その際、前記筒体が円筒形状を有することが好ましい。また、前記筒体の横断面において、内部空間の断面積が１０〜２５ｃｍ２の範囲内であることが好ましい。前記筒体の長さＬとしては３〜１０ｃｍの範囲内であることが好ましい。前記筒体の肉厚としては０．５〜５ｍｍの範囲内であることが好ましい。前記筒体は合成樹脂からなることが好ましい。また、前記筒体の内壁に、前記布帛Ａと同じか、または異なる布帛構成を有する布帛Ｂが貼り合わされていることが好ましい。また、かかる筒体はその上部につばを有することが好ましい。また、該つばの上面に、前記布帛Ａと同じか、または異なる布帛構成を有する布帛Ｃが貼り合わされていることが好ましい。 In that case, it is preferable that the said cylinder has a cylindrical shape. Moreover, it is preferable that the cross-sectional area of internal space is in the range of 10-25 cm < 2 > in the cross section of the said cylinder. The length L of the cylindrical body is preferably within a range of 3 to 10 cm. The thickness of the cylindrical body is preferably in the range of 0.5 to 5 mm. The cylinder is preferably made of a synthetic resin. Further, it is preferable that a fabric B having the same or different fabric configuration as the fabric A is bonded to the inner wall of the cylindrical body. Moreover, it is preferable that this cylinder has a collar in the upper part. In addition, it is preferable that a fabric C having the same or different fabric configuration as the fabric A is bonded to the upper surface of the collar.
本発明の布帛摩擦時の摩擦音測定方法において、布帛Ａの面積が５０〜１０００ｃｍ２の範囲内であることが好ましい。また、前記布帛Ａに錘がとりつけられていることが好ましい。かかる錘の質量としては１０〜５０００ｇｒの範囲内であることが好ましい。また、前記錘が、前記布帛Ａの中心部にひもを介してとりつけられていることが好ましい。
本発明の布帛摩擦時の摩擦音測定方法において、マイクロホンを用いて録音した摩擦音を、ＦＦＴ周波数解析装置により解析することが好ましい。
In the method for measuring frictional sound during fabric friction of the present invention, the area of the fabric A is preferably in the range of 50 to 1000 cm 2 . Moreover, it is preferable that a weight is attached to the fabric A. The mass of the weight is preferably in the range of 10 to 5000 gr. Moreover, it is preferable that the said weight is attached to the center part of the said fabric A through a string.
In the method for measuring a frictional sound at the time of fabric friction according to the present invention, it is preferable to analyze a frictional sound recorded using a microphone by using an FFT frequency analyzer.
本発明によれば、駆動部を必要とすることなく、布帛を摩擦する時に発生する摩擦音を正確に測定する方法が得られる。 According to the present invention, it is possible to obtain a method for accurately measuring a friction sound generated when a fabric is rubbed without requiring a driving unit.
以下、本発明の実施の形態について詳細に説明する。
まず、本発明において、筒体の長手方向が床に対して垂直方向になるよう筒体を固定する。その際、筒体の固定方法としては特に制限されず、例えば、通常の固定スタンドなどを用いて、筒体の長手方向が床に対して垂直方向になるよう、すなわち、筒体が上下方向となるよう固定するとよい。その際、筒体はテーブル等の台の上に置いてもよいが、空中に浮かせた方がよい。筒体をテーブル等の台の上に置くと、布帛Ａが自由落下した後に台に衝突し、衝突音が発生するおそれがある。
Hereinafter, embodiments of the present invention will be described in detail.
First, in the present invention, the cylinder is fixed so that the longitudinal direction of the cylinder is perpendicular to the floor. At that time, the method for fixing the cylinder is not particularly limited, and for example, using a normal fixing stand or the like, the longitudinal direction of the cylinder is perpendicular to the floor, that is, the cylinder is in the vertical direction. It is better to fix it. At that time, the cylinder may be placed on a table or the like, but it is better to float in the air. When the cylindrical body is placed on a table or the like, the fabric A may collide with the table after free-falling, and a collision sound may be generated.
また、筒体は図１に模式的に示すように上部および下部が開口しており、その内部空間を貫通するよう、布帛Ａが自由落下する。前記筒体の形状としては特に限定されないが、その横断面形状が真円である円筒、その横断面形状が楕円である楕円筒、その断面形状が四角形や六角形などの多角形である角筒などが例示される。特に、摩擦音を再現性よく測定する上で円筒形状が好ましい。 Further, as schematically shown in FIG. 1, the upper and lower portions of the cylindrical body are open, and the fabric A freely falls so as to penetrate the internal space. The shape of the cylindrical body is not particularly limited, but a cylinder whose cross-sectional shape is a perfect circle, an elliptical cylinder whose cross-sectional shape is an ellipse, and a rectangular tube whose cross-sectional shape is a polygon such as a quadrangle or a hexagon. Etc. are exemplified. In particular, the cylindrical shape is preferable for measuring the frictional sound with good reproducibility.
また、前記筒体のサイズとしては、その横断面（長手方向と直交する方向の断面）において、内部空間の断面積が１０〜２５ｃｍ２の範囲内であることが好ましい。該断面積が１０ｃｍ２よりも小さいと布帛Ａがスムーズに自由落下しないおそれがある。逆に、該断面積が２５ｃｍ２よりも大きいと布帛Ａが自由落下する際、筒体の内壁に布帛Ａが接触しにくくなり摩擦音が発生しないおそれがある。 In addition, as the size of the cylindrical body, it is preferable that the cross-sectional area of the internal space is within the range of 10 to 25 cm 2 in the cross section (cross section in the direction orthogonal to the longitudinal direction). If the cross-sectional area is smaller than 10 cm 2 , the fabric A may not smoothly fall freely. On the other hand, if the cross-sectional area is larger than 25 cm 2, when the fabric A freely falls, the fabric A is unlikely to come into contact with the inner wall of the cylindrical body, and there is a possibility that no frictional noise is generated.
前記筒体の長手方向の長さＬとしては３〜１０ｃｍの範囲内であることが好ましい。該長さＬが３ｃｍよりも小さいと布帛Ａが筒体内部を通過する時間が短くなってしまい摩擦音を十分測定できないおそれがある。逆に該長さＬが１０ｃｍよりも大きいと必要以上に長くなってしまい、作業性が損われるおそれがある。 The length L in the longitudinal direction of the cylindrical body is preferably in the range of 3 to 10 cm. When the length L is less than 3 cm, the time for the fabric A to pass through the inside of the cylinder is shortened, and there is a possibility that the frictional sound cannot be measured sufficiently. On the contrary, if the length L is larger than 10 cm, it becomes longer than necessary, and workability may be impaired.
前記筒体の肉厚Ｗとしては０．５〜５ｍｍの範囲内であることが好ましい。該肉厚Ｗが０．５ｍｍよりも小さいと筒体の強度が低下してしまうおそれがある。逆に、該肉厚Ｗが５ｍｍよりも大きいと、筒体の外部に設置されたマイクロホンを用いて録音する摩擦音を測定するとき十分録音できないおそれがある。 The wall thickness W of the cylindrical body is preferably in the range of 0.5 to 5 mm. If the wall thickness W is smaller than 0.5 mm, the strength of the cylinder may be reduced. On the contrary, if the wall thickness W is larger than 5 mm, there is a possibility that sufficient recording cannot be performed when measuring a friction sound to be recorded using a microphone installed outside the cylinder.
前記筒体の材質としては特に限定されないが、加工性の点で合成樹脂が好ましい。特に、透明のアクリル樹脂で筒体を形成すると、布帛Ａが落下する様子を観察することができ好ましい。 The material of the cylindrical body is not particularly limited, but a synthetic resin is preferable in terms of workability. In particular, it is preferable to form the cylindrical body with a transparent acrylic resin because it is possible to observe how the fabric A falls.
前記筒体の内壁には、図３に模式的に示すように布帛Ｂが貼り合わされていると、布帛Ａと布帛Ｂとの摩擦音が発生し、実着用を想定した評価となり好ましい。該布帛Ｂの布帛構成（すなわち、布帛構成糸条、織編組織、密度など）は布帛Ａと同じでもよいし、異ならせてもよい。製品となった際を想定して適宜選定するとよい。 When the fabric B is bonded to the inner wall of the cylindrical body as schematically shown in FIG. 3, a friction sound between the fabric A and the fabric B is generated, which is preferable because it is assumed to be actually worn. The fabric configuration of the fabric B (that is, the fabric constituent yarn, woven / knitted structure, density, etc.) may be the same as or different from the fabric A. It is recommended to select as appropriate assuming the product.
また、前記筒体において、図４に模式的に示すように筒体の上部につばを有していることが好ましい。該つばは平面状でもよいし椀状でもよい。かかるつばの上面には、図５に示すように中央に穴部を有する布帛Ｃを貼りあわせることが好ましい。かかる布帛Ｃの上に布帛Ａを重ねるようにして置くと、布帛Ａは布帛Ｃの穴部を経由して筒体内部を貫通するように自由落下するため、布帛同士の摩擦音が発生し、より実着用に近い評価が可能となる。 Moreover, in the said cylinder, it is preferable to have a collar at the upper part of a cylinder, as typically shown in FIG. The collar may be planar or hooked. It is preferable that a fabric C having a hole at the center is bonded to the upper surface of the collar as shown in FIG. When the fabric A is placed on the fabric C so as to overlap the fabric A, the fabric A falls freely through the hole of the fabric C so as to penetrate the inside of the cylindrical body. Evaluation close to actual wearing is possible.
次に、布帛Ａの面積としては、前記筒体の内部空間の断面積よりも大きいことが好ましく、５０〜１０００ｃｍ２の範囲内であることが特に好ましい。布帛Ａの面積が５０ｃｍ２よりも小さいと布帛Ａが自由落下する際、筒体の内壁と接触せず摩擦音が発生しないおそれがある。逆に、布帛Ａの面積の面積が１０００ｃｍ２よりも大きいと、布帛Ａと筒体の内壁との摩擦が大きくなりすぎて布帛Ａが自由落下しないおそれがある。
布帛Ａの形状としては、円形であると摩擦時の方向性がなくなり好ましいが、三角形や四角形など多角形でもよい。
Next, as the area of the fabric A, it is preferably greater than the cross-sectional area of the inner space of the cylindrical body, and particularly preferably in the range of 50~1000cm 2. When the area of the fabric A is smaller than 50 cm 2, when the fabric A freely falls, there is a possibility that it does not come into contact with the inner wall of the cylinder and no frictional noise is generated. On the contrary, if the area of the area of the fabric A is larger than 1000 cm 2 , the friction between the fabric A and the inner wall of the cylindrical body becomes too large, and the fabric A may not freely fall.
The shape of the fabric A is preferably a circular shape because the directionality during friction is eliminated, but may be a polygon such as a triangle or a quadrangle.
また、前記布帛Ａに錘が取り付けられていると、布帛Ａが自由落下しやすく好ましい。錘の質量は評価する布帛Ａにより適宜選定されるが、１０〜５０００ｇｒの範囲内であることが好ましい。例えば、布帛Ａが通常ウインドブレーカーに使用されるような高密度ポリエステル平織物であれば、１００〜５０００ｇｒの範囲の質量を有する錘が好ましい。
かかる錘が、図６に模式的に示すように布帛Ａの中心部にひもを介してとりつけられていると、布帛Ａが安定的に自由落下し好ましい。
Moreover, when the weight is attached to the said fabric A, the fabric A is easy to fall freely and is preferable. The mass of the weight is appropriately selected depending on the fabric A to be evaluated, but is preferably in the range of 10 to 5000 gr. For example, if the fabric A is a high-density polyester plain fabric that is usually used in a windbreaker, a weight having a mass in the range of 100 to 5000 gr is preferable.
When the weight is attached to the center portion of the fabric A via a string as schematically shown in FIG. 6, the fabric A is preferably free-falling stably.
本発明の布帛摩擦時の摩擦音測定方法において、上下方向に固定された前記筒体の内部を、前記布帛Ａが自由落下する際の該布帛Ａと前記筒体の内壁との摩擦音を、前記筒体の外部に設置されたマイクロホンを用いて録音する。ここで、マイクロホンとしては通常の騒音測定用のマイクロホンでよい。 In the method for measuring a frictional sound at the time of fabric friction according to the present invention, the frictional sound between the fabric A and the inner wall of the cylindrical body when the fabric A freely falls inside the cylindrical body fixed in the vertical direction, Record using a microphone placed outside the body. Here, the microphone may be a normal microphone for noise measurement.
また、マイクロホンを用いて録音した摩擦音を、ＦＦＴ周波数解析装置により解析することが好ましい。その際、ＦＦＴ周波数解析装置は２００００Ｈｚまでの音をＦＦＴ周波数解析でき、また、１／３オクターブ解析も備えた録音、解析ソフトを備えたものであることが好ましい。音圧レベルだけでも摩擦音が発生しやすい布帛と発生しにくい布帛との判別が可能であるが、周波数解析、オクターブ解析を行うことにより、不快音域での摩擦音発生レベルを判別することも可能となる。 Moreover, it is preferable to analyze the friction sound recorded using the microphone with an FFT frequency analyzer. At that time, it is preferable that the FFT frequency analysis apparatus is capable of performing FFT frequency analysis of sound up to 20000 Hz and having recording and analysis software including 1/3 octave analysis. While it is possible to discriminate between fabrics that are prone to generate frictional sounds and fabrics that are unlikely to generate only with sound pressure levels, it is also possible to determine the level of frictional noise generation in the uncomfortable sound range by performing frequency analysis and octave analysis. .
次に本発明の実施例及び比較例を詳述するが、本発明はこれらによって限定されるものではない。なお、実施例中の各測定項目は下記の方法で測定した。 Next, although the Example and comparative example of this invention are explained in full detail, this invention is not limited by these. In addition, each measurement item in an Example was measured with the following method.
［実施例１］
８４ｄｔｅｘ／７２ｆｉｌの通常のポリエチレンテレフタレートマルチフィラメントを用い、経糸密度１３２本／２．５４ｃｍ、緯糸密度１０２本／２．５４ｃｍの織密度で平組織の高密度織物を製織した。次いで、該高密度織物を常法の染色方法により、精錬、リラックス、黒色に染色、乾燥を行うことにより織物を得た後、直径２５ｃｍの円形に裁断することにより布帛Ａを得た。次いで、該布帛Ａの中心部に凧糸を貫通させ、一方を玉結びで止めた。そして、凧糸の他方端に質量２００ｇの錘を結んだ。
[Example 1]
A normal polyethylene terephthalate multifilament of 84 dtex / 72 fil was used to weave a high density woven fabric having a plain structure with a weft density of 132 yarns / 2.54 cm and a weft density of 102 yarns / 2.54 cm. Next, the high-density fabric was refined, relaxed, dyed black, and dried by a conventional dyeing method to obtain a fabric, and then cut into a circle having a diameter of 25 cm to obtain a fabric A. Next, a kite thread was passed through the center of the fabric A, and one was fastened with a ball knot. A weight of 200 g was tied to the other end of the kite string.
一方、筒体として内径３ｃｍ（断面積７平方センチメートル）、外径９．４ｃｍ、肉厚１．０ｍｍ、上部と下部とが開口した円形断面を有する透明アクリル製筒体（長さ１０ｃｍ）を用意した。そして、図４に模式的に示すように、該筒体の上部に、外径３０ｃｍ、内径３ｃｍの中空円形平面アクリル板（つば）を接着剤で接合した。次いで、前記織物を裁断して、前記筒体の内壁に接着剤で貼り付け布帛Ｂとした。さらに、前記織物を外径３０ｃｍ、内径３ｃｍの中空円形状に裁断した後、前記つばの上に貼りつけ布帛Ｃとした。そして、該筒体を固定スタンドにより固定した。 On the other hand, a transparent acrylic cylinder (10 cm in length) having a circular cross section with an inner diameter of 3 cm (cross-sectional area of 7 square centimeters), an outer diameter of 9.4 cm, a wall thickness of 1.0 mm, and an upper portion and a lower portion was prepared. . Then, as schematically shown in FIG. 4, a hollow circular flat acrylic plate (brim) having an outer diameter of 30 cm and an inner diameter of 3 cm was joined to the upper portion of the cylindrical body with an adhesive. Next, the woven fabric was cut and attached to the inner wall of the cylindrical body with an adhesive to obtain a fabric B. Further, the woven fabric was cut into a hollow circular shape having an outer diameter of 30 cm and an inner diameter of 3 cm, and then pasted on the collar to obtain a fabric C. And this cylinder was fixed with the fixed stand.
一方、前記筒体から３ｃｍ離れた位置にマイクロホンとして広帯域精密騒音計（小野測器（株）製、品番ＬＡ−５５６０）を設置し、ＦＦＴアナライザー（小野測器（株）製、品番ＤＳ−２１４０、ＤＳ−０２９７）を介して、ＦＦＴ解析ソフト（小野測器（株）製、品番ＤＳ−０２２１Ｗ、ＤＳ−０２５０Ｗ）および１／１・１／３リアルタイムオクターブ解析ソフト（小野測器（株）製、品番ＤＳ−０２２３Ｗ）をインストールしたパーソナルコンピュータに連結した。
On the other hand, a broadband precision sound level meter (manufactured by Ono Sokki Co., Ltd., product number LA-5560) is installed as a microphone at a
次いで、図７に模式的に示すように布帛Ａを前記つばの上に静かに置き、自由落下させると同時に、発生した摩擦音を前記パーソナルコンピュータに取り込んだ。試験は各サンプルＮ＝５で実施し、最高音圧レベルおよび最高音圧レベルが確認された周波数（ピーク周波数）をそれぞれ解析した。評価結果を表１に示す。 Next, as schematically shown in FIG. 7, the fabric A was gently placed on the collar and allowed to fall freely, and at the same time, the generated frictional sound was taken into the personal computer. The test was performed with each sample N = 5, and the highest sound pressure level and the frequency at which the highest sound pressure level was confirmed (peak frequency) were analyzed. The evaluation results are shown in Table 1.
［実施例２］
実施例１において、８４ｄｔｅｘ／２８８ｆｉｌの通常のポリエチレンテレフタレートマルチフィラメントを用い、経糸密度１３２本／２．５４ｃｍ、緯糸密度１０２本／２．５４ｃｍの織密度で平組織の高密度織物を製織し、該高密度織物を常法の染色方法により、精錬、リラックス、黒色に染色、乾燥を行うことにより織物を得ること以外は実施例１と同様にした。評価結果を表１に示す。
[Example 2]
In Example 1, an ordinary polyethylene terephthalate multifilament of 84 dtex / 288 fil was used to weave a high-density woven fabric having a plain structure at a weaving density of 132 warps / 2.54 cm and a weft density of 102 / 2.54 cm. The same procedure as in Example 1 was performed except that the high-density fabric was refined, relaxed, dyed black, and dried by a conventional dyeing method to obtain the fabric. The evaluation results are shown in Table 1.
［比較例１］
実施例１で得られた織物を３０ｃｍ四方のアクリル板の上面に貼り付けた。他方、直径１０ｃｍの円形アクリル板の片面（下面）にも同じ織物を貼り付け、該円形アクリル板の上面に質量５０ｇの錘を載せた。
[Comparative Example 1]
The fabric obtained in Example 1 was attached to the upper surface of a 30 cm square acrylic plate. On the other hand, the same fabric was attached to one side (lower surface) of a circular acrylic plate having a diameter of 10 cm, and a weight with a mass of 50 g was placed on the upper surface of the circular acrylic plate.
次いで、前記３０ｃｍ四方アクリル板の対角線上を織物同士が摩擦するよう２往復／秒の速さで手で前記円形アクリル板を往復移動させた。その際、音圧レベル、ピーク周波数については実施例１と同様の設備を用い、３０ｃｍ四方アクリル板の中央部付近で摩擦音を録音した。評価結果を表１に示す。 Next, the circular acrylic plate was reciprocated by hand at a speed of 2 reciprocations / second so that the fabrics rub against each other on the diagonal line of the 30 cm square acrylic plate. At that time, with respect to the sound pressure level and peak frequency, the same equipment as in Example 1 was used, and a frictional sound was recorded near the center of a 30 cm square acrylic plate. The evaluation results are shown in Table 1.
［比較例２］
実施例２で得られた織物を用いて、比較例１と同様の試験を実施した。評価結果を表１に示す。
[Comparative Example 2]
Using the fabric obtained in Example 2, the same test as in Comparative Example 1 was performed. The evaluation results are shown in Table 1.
本発明によれば、駆動部を必要とすることなく、布帛を摩擦する時に発生する摩擦音を正確に測定する方法が得られ、工業的価値は極めて大である。 According to the present invention, it is possible to obtain a method for accurately measuring a friction sound generated when a fabric is rubbed without requiring a driving unit, and the industrial value is extremely large.
１ 筒体の内部空間
２ 筒体
３ 布帛Ｂ
４ 筒体の内部空間
５ つば
６ 筒体
７ 布帛Ｃ
８ 布帛Ａ
９ 凧糸
１０ 錘
１１ 布帛Ａ
１２ 固定スタンド
１３ マイクロホン
１４ 筒体
１５ 布帛Ｃ
１６ つば
DESCRIPTION OF
4 Internal space of
8 Fabric A
9 Woven yarn 10 Weight 11 Fabric A
12
16 brim
Claims (14)
その長手方向が床に対して垂直方向に固定された筒体の内部において、布帛Ａを自由落下させ、その際に発生する、該布帛Ａと前記筒体の内壁との摩擦音を、前記筒体の外部に設置されたマイクロホンを用いて録音することを特徴とする布帛摩擦時の摩擦音測定方法。 A method for measuring a friction sound generated when rubbing a fabric,
In the cylinder whose longitudinal direction is fixed in a direction perpendicular to the floor, the cloth A is freely dropped, and the friction sound between the cloth A and the inner wall of the cylinder generated at that time is generated. A method for measuring a frictional sound at the time of fabric friction, characterized in that recording is performed using a microphone installed outside the machine.
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|---|---|---|---|---|
| JPH05338069A (en) * | 1992-06-11 | 1993-12-21 | Asahi Kasei Textiles Ltd | Moisture-permeable waterproof cloth |
| JPH06117912A (en) * | 1992-10-02 | 1994-04-28 | Toyota Central Res & Dev Lab Inc | Method and device for evaluating tone |
| JPH10267742A (en) * | 1997-03-24 | 1998-10-09 | Fuji Xerox Co Ltd | Tone quality evaluating device and its method |
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| JPH1123358A (en) * | 1997-06-17 | 1999-01-29 | Aerospat Soc Natl Ind | Apparatus for measuring noise inside of fluid flowing pipe |
| WO2005085805A1 (en) * | 2004-03-04 | 2005-09-15 | Centre National De La Recherche Scientifique -Cnrs- | Triboacoustic sensor |
| JP2006017582A (en) * | 2004-07-01 | 2006-01-19 | Denso Corp | Sound signal extraction method, sound signal extraction unit, abnormal sound inspection method, and abnormal sound inspection device |
| JP2006154212A (en) * | 2004-11-29 | 2006-06-15 | Ntt Advanced Technology Corp | Speech evaluation method and evaluation device |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05338069A (en) * | 1992-06-11 | 1993-12-21 | Asahi Kasei Textiles Ltd | Moisture-permeable waterproof cloth |
| JPH06117912A (en) * | 1992-10-02 | 1994-04-28 | Toyota Central Res & Dev Lab Inc | Method and device for evaluating tone |
| JPH10267742A (en) * | 1997-03-24 | 1998-10-09 | Fuji Xerox Co Ltd | Tone quality evaluating device and its method |
| JPH1123358A (en) * | 1997-06-17 | 1999-01-29 | Aerospat Soc Natl Ind | Apparatus for measuring noise inside of fluid flowing pipe |
| JPH1123357A (en) * | 1997-06-27 | 1999-01-29 | Bridgestone Corp | Evaluation method for noise of tire |
| WO2005085805A1 (en) * | 2004-03-04 | 2005-09-15 | Centre National De La Recherche Scientifique -Cnrs- | Triboacoustic sensor |
| JP2006017582A (en) * | 2004-07-01 | 2006-01-19 | Denso Corp | Sound signal extraction method, sound signal extraction unit, abnormal sound inspection method, and abnormal sound inspection device |
| JP2006154212A (en) * | 2004-11-29 | 2006-06-15 | Ntt Advanced Technology Corp | Speech evaluation method and evaluation device |
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