Re:1.15 BPF 보람아 부탁해

태형이형~ 그냥 쉽게 요약해서 번역할께요~ㅋㅋ   BPF1.15 is a lab test for regulating small-barrel baseball bats used by 7-12 yr.-olds in Little League, Cal Ripken League, etc. BPF1.15실험은 유소년용 작은베럴 배트용이다. The large-barrel youth bats used elsewhere in youth baseball are not regulated by BPF1.15, or by any other bat testing standard.   배럴이큰 청소년용은 BPF1.15 나 다른 실험으로 규제되지 않는다 BPF was originally invented to test slow-pitch softball bats in the mid-1990's.   BPF는 1990년대중반때 소프트볼배트를 실험하기에 만들어졌다. BPF1.15 places an upper limit on a bat's springiness ("trampoline effect") as compared to that of a rigid wall, which equals BPF 1.00. Wood bats are virtually inelastic, with values of slightly more than 1.00. Small barrel youth bats are not supposed to exceed 1.15.   BPF1.15 는 공이 배트에서 튕겨나가는 최고 제한을 규제하기위해서 만든것임. 딱딱한 벽을 가지고 있는 배트는 BPF 1.00임. 나무배트는 거의 탄력성이 거의 없기때문에 1.00보다 살짝 높음. 유소년 작은 베럴배트는 규칙적으론 1.15가 넘으면 안됨. Validity of BPF1.15: Scientists consider BPF1.15 to be scientifically flawed as a test of a bat's springiness, and virtually useless at accurately predicting ball exit velocity, which is the prime metric of bat performance.   BPF1.15 의 유효성은 과학자들의 의하면 좀 거시기함. 공이 튕겨나가는 속도가 짱 중요하지만 이테스트로는 추측하기 힘듬. BPF1.15 does NOT measure or predict "how fast the ball exits the bat when hit", as some claim. BPF1.15 test results do not correlate reliably with field batted-ball speed according to Dr. James Sherwood, the head of the top baseball research lab in the U.S. (NY Times, 10/18/08)   미국 야구연구소에서 짱인듯한 제임스 셔우드 박사도 동의함. Solid wood bats: Lacking a springy barrel, they generate batted-ball speed by clubbing the ball with their concentration of mass in the barrel (also called end-load, and scientifically described as a "higher MOI").   나무배트: 베럴이 탄력성이 떨어짐. 공이 배트맞고 튕겨나가는 구속은 배트의 mass가 집중되있는 곳으로 후려쳐야 만들어진다. (배트의 끝이 무거우면 MOI(공과 배트가 충돌하는 순간)가 높다) By contrast: Hollow non-wood bats compensate for less (overall) mass and end-load by gaining from: (a) their springiness, i.e., their barrels squish and rebound like a hand-held trampoline; and, (b) their engineered inertial qualities--their lighter overall weight as well as more evenly distributed weight (more balance, less end-load), which allow batters to swing hollow bats faster.   대조적으로는: 나무배트가 아닌 속이 빈 배트는 다 아시다싶이 탄력성이 높고 배트의 무개가 잘 배포되서 발란스도 좋고 타자들이 더 쉽게 스윙을 빠르게 할수있다. To put a cap on small barrel bat performance, BPF1.15 measures one factor (a), the springiness of hollow bats. BPF1.15 does not, however, take into account the other key factor, (b) the inertial qualities of hollow bats that enable greater swing-speed. BPF1.15 "ignores" swing-speed, and assumes that all types of bats can be swung at the same speed. 작은베럴의 성능에 제한을 두려고 하는 BPF1.15를  넘지못하게 한다고해도 스윙스피드가 빨라짐으로서 별로 중요한 제한이 아니라고함.  Further, in terms of predicting the (a) the springiness of small barrel bats under game conditions, BPF is defective. This is especially true for expensive high-end bats, for the following reasons:   아래의 이유로서 BPF 테스트로 작은 배럴의 테스트는 쓰레기라고 생각함. 특히 고성능 졸라비싼 배트들...  1. BPF1.15 is conducted at an unrealistically low combined-ball-vs.-bat collision speed of 60 mph. High-end bats are designed to squish and spring-back optimally at realistic ball/bat collision speeds (for example, 50 mph pitch/50 mph swing = 100 mph) that occur in real games.   1. BPF1.15 는 비현실적인 60mph의 속도로 공과배트의 충돌시험이다. 비싼배트들은 현실적으로 공을 뭉개버리고 잘 튕겨나가게 만들어짐 (예 50mph 투수공 / 50mph의 스윙 = 100mph) 2. BPF1.15 is conducted on new bats that are not yet broken-in. Today's high-end bats--double-wall bats and carbon-fiber composite bats--have multiple walls and/or layers that do not propel the ball optimally until they are broken-in. (By contrast, the ASA softball bat test requires bats to be mechanically broken-in prior to testing.)   2. BPF1.15는 길이 덜들어진 새배트로 함. 흔이 졸라비싼 카본 콤포짓이나 이중벽을 가지고 있는 배트는 길들어진후 공이 더 잘나감. (롤링효과) 3. The BPF test protocol does not call for random compliance testing. There is no assurance that the performance of tested bats is representative of the performance of bats that are actually sold and used throughout the year.   3. BPF실험은 랜덤요청으로 실험하지 않음. 실험된 배트들이 전반적으로 시중에 팔린 배트들의 성능을 대표하지 않음. 4. The BPF1.15 lab test data has never been validated through field trials, which scientists consider to be a pre-requisite for legitimate scientific bat regulations.   4. BPF1.15 테스트 데이터는 필드에서 실험되지않고 증명되지 않음. 과학자들이 필수적으로 요구하는 적법한 배트규제는 필드테스팅이 필요함.  For the above reasons, the BPF1.15 test does not accurately capture the barrel-springiness of small barrel bats in game conditions. 위 이유들로 BPF1.15 테스트는 정확히 베럴의 탄력성을 게임상황에서 측정한게 아니라서 거시기 함. Until 2004, almost all small barrel baseball bats were relatively-inexpensive ($40-$150) single-wall aluminum bats. These are inherently limited in elasticity--bats get springier as wall-thickness is decreased, but thinner walls compromise durability. This limits single-wall bat designers. As a result, few single-wall bats can come close to testing at the BPF1.15 limit. 2004년도까진 작은배럴배트들은 저가에 벽이 한층이였음. 그래서 유연성이 떨어짐. 벽두깨가 앏아지면서 탄력성이 높아지고 내구성이 떨어짐. 이것이 단층벽배트만드는사람들에게 한계를 줌. 결과로 소수의 단층벽배트들이 BPF1.15 테스트의 한게를 접할수있다고 봄. But recently-introduced high-end ($150-$250) multi-wall bats--double-walls, and multi-layered carbon-fiber composite models--are significantly springier, test much closer to the limit, and for the reasons cited above can surpass their tested values for elasticity when used in real game conditions.   요즘 비싼 이중벽배트들이나 카본콤포짓 배트들이 BPF1.15 테스트에 페스한다해도 진짜 게임환경에선 BPF1.15 선을 넘는 성능을 발휘함. To purchase a small barrel youth bat that has maximum springiness--and that very possibly will perform beyond the maximum allowable springiness--consumers should spring for an expensive double-wall or carbon-fiber composite bat. 반발력 좋은배트 살려면 비싼거 사라함. 그래야 탄력성이 좋음. To summarize: BPF1.15 does NOT measure exit velocity in the lab, does not reliably predict field exit velocity, does not account for swing-speed, and is imperfect at measuring and predicting a major contributor to exit velocity: the trampoline effect of modern hollow youth small barrel bats being used in game conditions. However, in the absence of BPF1.15, it it probable that many multi-wall small-barrel bats would perform even better than they currently perform. By comparison, youth large barrel bats are not subject to any performance regulations.   이글을 요약하면 BPF1.15 테스트는 공이 튕겨나가는 속도를 실험실에서 측정하지 않음. 필드에서도 측정하지 않음, 그리고 스윙속도도 고려하지 않음. 그러니 거의 형식적인 테스트임. 하지만 BPF1.15 테스트가 없으면 이중이나 몇겹층의 배트들이 더 잘 날라가겠음.   형님 제 짧은 영어실력으로 이해하면 글쓴이는 BPF1.15 테스트를 까대는거에요. 형편성 없는 테스트고 비현실적이다라고 나와있네요~