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Á¦¸ñ ½ºÆåÆ®·³ ºÐ¼®(Spectrum Analysis)-±â°èÀû°áÇÔ
ÀÛ¼ºÀÚ AST
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½ºÆåÆ®·³ ºÐ¼®(Spectrum Analysis)-±â°èÀû°áÇÔ



½ºÆåÆ®·³±×·¡ÇÁ¸¦ ÀÌ¿ëÇÑ Â÷¼öºÐ¼®(Order Analysis)Àº ±â°èÀû °áÇÔ, ÀüÀÚ±âÀû°áÇÔ ±×¸®°í À¯Ã¼°ü·Ã°áÇÔÀ» ¾Ë¾Æ³»±â À§Çؼ­ ¿ëÀÌÇÏ°Ô »ç¿ëµÈ´Ù. ÃʱâÀÇ Àǵµ´Â Áøµ¿½ÅÈ£¸¦ ÅëÇؼ­ ¾î¶°ÇÑ ±ÔÄ¢¼ºÀÌ ±â°èÀÇ °áÇÔ°ú °ü·ÃÀÌ ÀÖÀ» °ÍÀ̶ó´Â °Í¿¡¼­ Ãâ¹ßÇÏ¿´À» °ÍÀ¸·Î ÃßÃøÇÏÁö¸¸ »ç½Ç ´ëºÎºÐ Â÷¼öºÐ¼®ÀÇ ±Ù°Å°¡ µÇ´Â ±ÔÄ¢Àº ¹°¸®ÀûÀ¸·Î ¼³¸íÀÌ µÉ ¼ö ÀÖ´Ù. À̸¦ Àΰ£ÀÇ °Ç°­°ú Áúº´¿¡ °üÇØ °úÇÐÀûÀ¸·Î ºÐ¼®ÇÑ °Í°ú ºñ±³ÇÒ ¼ö ÀÖ´Ù°í ÇÏ´Â °Íµµ ÀÌÇØ°¡ µÉ °ÍÀÌ´Ù.

 

±â°èÀû°áÇÔ(¿ä¾àÇ¥)

¼³ºñÀÇ ±â°èÀû°áÇÔ ¿©ºÎ¸¦ Áøµ¿½ºÆåÆ®·³ ÁÖÆļö ±×·¡ÇÁ¸¦ ÅëÇؼ­ È®ÀÎÇØ º¼ ¼ö ÀÖ´Ù. ¾Æ·¡ÀÇ Ç¥´Â ±â°èÀû °áÇÔ¿¡ °ü·ÃµÈ Â÷¼öºÐ¼®ÀÇ ±ÔÄ¢À» ¿ä¾àÇØ ³õÀº °ÍÀÌ´Ù. ±×·¯³ª ÀÌ Ç¥¸¦ ¸ðµÎ ¾Ï±âÇÏ°í ÀÌÇØÇÑ´Ù°í ÇÏ´õ¶óµµ ±â°èÀÇ Áøµ¿Áø´ÜÀº ¶Ç ¸¹Àº ¹®Á¦¸¦ °¡Áö°í ÀÖÀ¸¹Ç·Î ´ÜÁö ±âº»À» À§ÇÑ ÂüÁ¶·Î È°¿ëµÈ´Ù°í ÀÌÇØÇÏ¸é µÈ´Ù.

 

Ç׸ñ

Çö»ó

ºñ°í

Unbalance

1X(Radial)

À§»ó¾ÈÁ¤

Misalignment

2X, 1,2,3X

¾çÂÊ Inboard Bearing¿¡¼­ÀÇ 180 À§»óÂ÷

 

Bent shaft

1X(Axial)

- À§Çè¼Óµµ Åë°ú ½Ã ±Þ°ÝÇÑ Áøµ¿ °¨¼Ò,»ó½Â

- ±â°èÀÇ º£¾î¸µ ¾ç´Ü¿¡¼­ À§»ó 180 Â÷ÀÌ

 

Sleeve bearing wear, excessive clearance

1,2,3,¡¦X, 0.5X

ºÒ¾ÈÀû À§»ó°¢,

0.42~0.48X(oil whirl)

 

Resonance

ƯÁ¤ÁÖÆļö Áøµ¿ÁõÆø

Balancing°¨µµ Áõ°¡

 

looseness

1,2,3,¡¦X,

1/2,1/3,1/4¡¦X

boltÀÌ¿Ï,

 

Eccentricity

1X

Balancing ÈÄ ¹Ý°æ¹æÇâ Áß ÇÑÂÊ ¹æÇ⸸ °¨¼Ò,

 

Distortion

1X, GMF, 2Lf

Soft foot, ºÒ±ÕÀϿµµºÐÆ÷, Balancing & Alignment¾î·Á¿ò.

 

Rub

1,2,3,¡¦X,

1/2,1/3,1/4¡¦X

Looseness¿Í À¯»ç, À±È°

Belt

¥ðdn/L

¹Ý°æ¹æÇâÀÇ 2Xbelt

 

Beat

1X ¶Ç´Â ƯÁ¤ÁÖÆļö

Àü±â¿Í ȸÀü¼öÀÇ °£¼· ¶Ç´Â ±ÙÁ¢ÇÑ 2°³ÀÇ ÁÖÆļö°£ÀÇ °£¼·(ÁøÆøÀÌ »ó½Â ¹× ÇÏ°­ ¹Ýº¹)

 

Rolling bearing

BPFI=0.6Nf, BPFO=0.4Nf, FTF=0.4f



BPFI =(N*f/2) [1+(d/D) COS¥Õ]

BPFO = (N*f/2)[1-(d/D) COS¥Õ]

BSF = (D*f/2d)[1-((d/D) COS¥Õ)^2]

FTF=(f/2) [1-(d/D) COS¥Õ]



 

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Order, TS, ¼³ºñÁø´Ü±âº»¿ë¾î, 1X, ½ºÆåÆ®·³, Spectrum, Áøµ¿ÁÖÆļö, ±â°èÀû°áÇÔ


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