Official Answer
Answer
Yayin da ake amfani da ma'aunin Wahl a al'ada don maɓuɓɓugan ruwa na helical, ana amfani da irin wannan gyare-gyaren lanƙwasa zuwa maɓuɓɓugan ruwan raƙuman ruwa don asusu don rarraba damuwa marar layi a cikin fadin radial $ b$. Danniya ya fi girma a radius na ciki $R_i$ fiye da radius na waje $R_o$. Matsalolin da aka daidaita $\sigma_{adj} = C \cdot \sigma_{nom}$, inda $C$ aiki ne na rabon $D_m/b$. Yin watsi da wannan batu a cikin ƙananan ƙira inda girman radial ya kasance babba dangane da diamita na iya haifar da samar da ba zato ba tsammani, saboda ƙarancin fiber na iya wuce ƙarfin yawan amfanin ƙasa $ S_y$ ta $15-20 \% $.
